A given quantity of rice is sufficient for 60 persons for 3 days. How many days would the rice last for 18 persons?

In a camp, there is enough flour for 300 persons for 42 days. How long will the flour last if 20 more persons join the camp?

108 kg of ration is sufficient for 18 students for 15 days. Find, for how many students will 70 kg ration be sufficient for 25 days.

Some quantity of rice is required for each member of a family of 15 members. On a particular day, due to the absence of some members of the family, the consumption of rice was reduced in the ratio 5 : 3. Find the number of members absent on that day.

If m persons can paint a house in d days, how many days will it take for (m + 2) persons to paint the same house?

Working 7 hours a day, 18 persons can complete a certain work in 32 days. In how many days would 14 persons complete the same work, working 8 hours a day ?

Two persons could fit new windows in a house in 3 days. How many persons would be needed to fit the windows in one days?

For mid-day meal of 500 students, 175 kg of rice is required for a week. After 75 kg of rice has been used, how long will remaining rice last for 400 sudents.