SOLUTION: 500 people were at cinema house. some of them paid 15cents. and the rest paid 20cents. of the total cash collected was $91, find the number of the 15 cents

Question 1124508: 500 people were at cinema house. some of them paid 15cents. and the rest paid 20cents. of the total cash collected was $91, find the number of the 15 cents
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = 15 cent payers
Let = 20 cent payers
��-
(1)
(2)
��-
(2)
Multiply both sides of (1) by
and subtract (1) from (2)
(2)
(1)
��

And
(1)
(1)
��
There were 180 15 cent payers

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