12 men had provision of food for 20 days. Let's find if there are 40 men, how long will the proyision last?

12 men had provision of food for 20 days. Find, if there are 40 men, how long will the provision last?

120 men had food provisions for 200 days. After 5 days, 30 men died due to an epidemic. The remaining food will last for____

In a fort there was reserved enough food of 2400 soldires for 39 days. The fort was reinforced by 800 more soldiers after 15 days without and food. Then how long will the remaining food last ?

In a flood relief camp, there is a provision of food for 4000 people for 190 days. After 30 days, 800 people went away elswhere. Find for how many days the remaining food lasts for the remaining people in this camp.

To pass a bridge of length 250m. a train of length 150m. took 30 sec. Let's calculate to find how long will this train take to pass a 130m. long platform.

A goods train 250m. long is running at a speed of 33km/hr. Another mail train 200m long and running at a speed of 60 km/hr. It is running in same direction on a different track and after meeting the goods train over passes it. Let us find how long will the mail train take to overpasses the goods train.

20- men, decided to complete the repairing work, of a house in 30 days. But after 6 days 8 men feel sick. Let's find, how long they will take to complete the work.

8 men can do a piece of work in 15 days. Find in how many days will 10 men finish the same work.

10 of us decided to visit our farmhouse for a week. We arranged food accordingly. But at the last moment 4 more friends joined us. Let’s find how long will that food last.