Peter agreed to work after school for 8 weeks at a fixed weekly rate. But instead of being given only money, he was to be given $85 and a bicycle. However, Peter worked only 5 weeks at the fixed weekly rate and was given $25 and the bicycle. How much was the bicycle worth?
-- I saw somewhere the answer is $75 but not sure how to get that.
-- originally i took the $85 and divided by 8 weeks, and that gave me $10.62
-- then i took the 5 weeks and multiplied it by $10.62
-- that gave me 53.12
-- thought about minusing $25 from that... but am totally STUMPED.
p.s. yes, I know I am bad @ math!
Thanks for reading!