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29-04-2018
Mathematics

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the price for admission for concert was $9 for adults and $4 for children all together 1770 tickets were sold in the resulting revenue is $14,680 and how many children attended the concert?

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yythung1102p50a08 yythung1102p50a08

29-04-2018

x+y=1770
9x+4y=14680
x=1770-y
9(1770-y)+4y=14680
15930-9y+4y=14680
-5y=-1250
5y=1250
y=1250/5
y=250
children attended=250

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