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Henry, Jack and Liam sold some calculators. Liam sold 30% of the total number of calculators sold by Jack and Henry. Henry sold 20% of the total number of calculators sold by Jack and Liam. Jack sold 87 more calculators than Liam. Find the total number of calculators sold by all the boys.

 Mar 17, 2022
 #1
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Henry sells H, Liam sells L  and  Jack sells J

 

L=0.3(J+H)     (1)

H=0.2(J+L)     (2)

J=L+87           (3)

 

Substitute (3) inot the other 2 and then solve them simulaneously.

 

Can you take it from there?

 Mar 21, 2022

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