An agricultural co-operative society of village Pachla has purchased a tractor. Previously 2400 bighas of land were cultivated by 25 ploughs in 36 days. Now half of th land can be cultivated only by that tractor in 30 days. Calculate by using the theory of variation the number of ploughs work equally with one tractor.

15 men can cultivate 18 bighas of land in 5 days. By using theory of variation, determine the number of bighas to be cultivated by 10 men in 10 days.

If 15 farmers can cultivate 18 bighas of land in 5 days, then calculate by using thoery of variation the number of days required by 10 farmers to cultivate 12 bigas of land.

If 5 men can cultivate 10 acres of land in 9 days,then by usnig theory of variation, find the number of days required to cultivate 30 acres of land by 25 men .

2 men can cultivate 6 acres of land in 4 days . By using theory of variation , find the number of men required to cultivate 18 acres of land in 8 days.

If 5 men can cultivate om 10 bighas of land in 9 days, calculate by theory of variation how long will be taken by 25 men for cultivating 30 bighas of land.

If 15 farmers can cultivate 18 bighas of land in 5 days, determine by using theory of variation the number of days required by 10 farmers to cultivate 12 bighas of land .

4 tractors are required to cultivate 360 bighas of land in 20 days, Let us find, how many tractors are needed to cultivate 1800 bighas of land in 10 days.

If 5 tractors can plough 5 hectares of land in 5 days, then what is the number of tractors required to plough 100 hectares in 50 days ?

Long ago, a Brahmin called Haridatta lived in a little village. He was a farmer but the piece ofland he cultivated provided him with so little to survive on that he was very poor. One day, unable to stand the heat of the summer sun, he went to rest for a while under a big tree on his land. Before he could stretch out on the ground, he saw a huge black cobra slithering out of an anthill nearby. The snake then spread his hood and swayed gracefully from side to side. Haridatta was astonished to see this and he thoughts. "This cobra must really be the god of this land. I have never seen or worshipped him before, which is probably why I am not able to get anything from the land. From this day onwards, I will worship him". He hurried back to his home at once and returned with a glass full of milk. He poured it into a bowl and turning to the anthill said, "O ruler of the land. I did not know you were living in this anthili. That is why I have not paid my tribute to you. Please accept my apologies for this omission and accept this humble offering." He then placed the bowl of milk at the entrance of the anthill and left the place. The next day when the Brahmin arrived to work on his land before the sun rose, he found a gold coin in the bowl he had left at the anthill. He was very happy indeed and from that day on, he made it a practice to offer the cobra milk in a bowl each day. The next morning he would collect a gold coin and leave. One day Haridatta had to go to a neighbouring village on business. He asked his son to go to the anthill as usual and leave a bowl of milk for the cobra. The son did as he was told, but when he went to the same spot the next day and collected the gold coin he thought. "This anthill must be full of gold. If I kill the cobra. I can collect all the gold in an instant, instead of having to waste my time coming hero every day." He then struck the cobra with abig stick. The cobra deftiy dodged the blow but bit Haridatta'.s son with his poisonous fangs. The boy soon died. When Haridatta returned to his village the next day, he heard how his son had met his death. He realised'at once that his son's greed would probably have caused him to attack the cobra. The Brahmin went to the anthill the day after his son's cremation and offered milk to the cobra as usual. This time, the cobra did not even come out of his hole. Instead, he called out to Haridatta. You have come here for gold, forgetting that you have Just lost a precious son and that you are in mourning. The reason for this is pure greed. From today, there is no meaning to our relationship. I am going to give you a diamond as a final gift. But please don't ever come back again." He slithered away as the Brahmin watched. Which of the following is TRUE according to the story?

Long ago, a Brahmin called Haridatta lived in a little village. He was a farmer but the piece ofland he cultivated provided him with so little to survive on that he was very poor. One day, unable to stand the heat of the summer sun, he went to rest for a while under a big tree on his land. Before he could stretch out on the ground, he saw a huge black cobra slithering out of an anthill nearby. The snake then spread his hood and swayed gracefully from side to side. Haridatta was astonished to see this and he thoughts. "This cobra must really be the god of this land. I have never seen or worshipped him before, which is probably why I am not able to get anything from the land. From this day onwards, I will worship him". He hurried back to his home at once and returned with a glass full of milk. He poured it into a bowl and turning to the anthill said, "O ruler of the land. I did not know you were living in this anthili. That is why I have not paid my tribute to you. Please accept my apologies for this omission and accept this humble offering." He then placed the bowl of milk at the entrance of the anthill and left the place. The next day when the Brahmin arrived to work on his land before the sun rose, he found a gold coin in the bowl he had left at the anthill. He was very happy indeed and from that day on, he made it a practice to offer the cobra milk in a bowl each day. The next morning he would collect a gold coin and leave. One day Haridatta had to go to a neighbouring village on business. He asked his son to go to the anthill as usual and leave a bowl of milk for the cobra. The son did as he was told, but when he went to the same spot the next day and collected the gold coin he thought. "This anthill must be full of gold. If I kill the cobra. I can collect all the gold in an instant, instead of having to waste my time coming hero every day." He then struck the cobra with abig stick. The cobra deftiy dodged the blow but bit Haridatta'.s son with his poisonous fangs. The boy soon died. When Haridatta returned to his village the next day, he heard how his son had met his death. He realised'at once that his son's greed would probably have caused him to attack the cobra. The Brahmin went to the anthill the day after his son's cremation and offered milk to the cobra as usual. This time, the cobra did not even come out of his hole. Instead, he called out to Haridatta. You have come here for gold, forgetting that you have Just lost a precious son and that you are in mourning. The reason for this is pure greed. From today, there is no meaning to our relationship. I am going to give you a diamond as a final gift. But please don't ever come back again." He slithered away as the Brahmin watched. What was the cobra's final gift. to the Brah min?