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Jack picks 5 pounds of apples in 8 minutes. Jill picks 6 pounds of apples in 10 minutes. Working together at these rates, how many pounds of apples will they pick in 40 minutes?

 Aug 20, 2018
 #1
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Solution #1

Jack picks 5/8 =0.625 pounds per minute.

Jill picks 6/10  =0.6 pounds per minute.

0.625 + 0.6       =1.225 pounds per minute - their combined rate per minute.

1.225 x 40          =49 pounds that Jack & Jill will pick in 40 minutes.

 

Solution #2

40/8 x 5 = 25 pounds that Jack will pick in 40 minutes.

40/10 x 6=24 pounds that Jill will pick in 40 minutes.

25 + 24    =49 pounds that both will pick in 40 minutes.

 Aug 20, 2018

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