Problema Solution
Jenny bought 7 t-shirts, one for each of her seven brothers, for $9.95 each. The cashier charged her an additional $13.07 in sales tax. She left the store with a measly $7.28. How much money did Jenny start with?
Answer provided by our tutors
let 'x' represent the money that Jenny started with
x - (7*9.95 + 13.07) = 7.28
by solving we find
x = $90
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Jenny had $90 to start with.