Direct and Inverse Variation ( 6 Questions & Solutions )

Click on the Question to open it's Explanation Video in YouTube.

Q.1) A wall 108 m long can be built by 15 men in 6 days. What is the number of men needed to build 90 m long wall in 3 days?

https://youtu.be/_q9Ld8xs9Nw

Q.2) A group of 30 persons can consume 48 kg of wheat in 4 days. In how many days can 40 persons consume 240 kg of wheat?

https://youtu.be/kG45mZHdymE

Q.3) A garrison of 750 men has provisions for 20 days. After 4 days, they are joined by 450 men. The same provision will last for how many more days?

https://youtu.be/R3CW575NxVA

Q.4) If 9 men can reap 90 hectares in 24 days, then how many hectares can 36 men reap in 32 days?
https://youtu.be/ByduvKsfJiM


Q.5) A work is done by some men in certain number of days. If the men are increased by 25, then the work is finished 5 days earlier. But if men are reduced by 50, then it will take 20 days extra to finish the work. Find the original number of men & days required to complete the work.
https://youtu.be/dUONEX1p_U4


Q.6) In a meadow there is sufficient grass for feeding 10 buffaloes or 12 cows for a period of 140 days. For how many days will 20 buffaloes and 18 cows feed on that quantity of grass?
https://youtu.be/qCcuJBlPVFw





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