Asked by Anonymous

For every 9 calendars that Diego sells, Adam sells 4. Diego sold 108 calendars last month. How many calendars did Adam sell?
Answered by Anonymous
(4/9)*108 = 4 * 12
Answered by Bosnian
A = number of calendars sold by Adam

D = number of calendars sold by Diego

For every 9 calendars that Diego sells, Adam sells means:

D / A = 9 / 4

Cross multiply

9 A = 4 D

A = 4 / 9 D

A = 4 / 9 ∙ 108 = 432 / 9 = 48
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