<PRE><B>Question 1083452</B>
x[3(5)-(3(2)+2)] = 70
x7 = 70
x = 10
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Check:
3 pairs of glasses . . . . .  3*2 = 6
electricity to run the ride: . . .= 2
 . . . . . . . . . . . . . . . . -----------
Total expense per ride . . . . . . 8
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Receipts:
3 individuals at $5 each = 15
Less expenses . . . . . .=  8
 . . . . . . . . . . . .--------
Net profit per ride . . .  7
To make $70: 70/7 = 10</PRE>