Problem 4 - Reduction method

5 farmers collect in 8 hours 120 kg of apples. If 8 farmers come to work the next day, how many kg of apples do they collect in 2 hours?

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Remember !

The method of reduction is based on comparing the sizes of the problem with the same size.

Exemple !

10 farmers collect in 4 hours 80 kg of apples. If 12 farmers come to work the next day, how many kg of apples do they collect in 3 hours?

10 farmers ........ 4 hours ........ 80 kg

10 farmers ........ 1 hour ........ 80 : 4 = 20 kg

1 farmer ........ 1 hour ........ 20 : 10 = 2 kg

12 farmers ........ 1 hour ........ 12 x 2 kg = 24 kg

12 farmers ........ 3 hours ........ 24 x 3 = 72 kg

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