1.

It takes 40 labourers to harvest a land of area 9600 m2 in 12 hours time. How many labourers it would take to harvest 17600 m2 of land in 10 hours?

Method:

I assumed that 40L harvested 9600 / 12 (9600 m2 per 12 hours)

Then how many XL would it take to harvest 17600 / 10 (17600m2 per 1o hours)

XL = (40 x 17600/10) x (12 / 9600) = 88 labourers’

Any feedback on this method?

2.

If 48 Kg of cake can fill up 9 boys for a mountain hike of 4 hours, then how many hours of hiking can 120Kg of cake fill up 15 boys?

Method:

9 boys consume 48 Kg / 4 hours

Then 15 boys will consume how much 120Kg/ X hours

Number of hours = 9 x 120 x 4 / 48 x 15 = 6 hours.

Any feedback on this method?