Problema Solution
Johns total charges at a local restaurant came to $386 last month, if he receives $5 off each $25 that he spends, how much money did he have to pay?
(solve by using algabra)
Answer provided by our tutors
For every $25 he gets $5 back thus we can consider that he spends $20
386 = 20*19 + 6 = (25 - 5)*19 + 6 = (25*19 + 6) - 5*19 = (475 + 6) - 95 = 481 - 95
for $481 paid he will receive $95 back
Johns had to pay $481.