Thjennifers new bike cost $180. her parents paid 40% of the costs and jennifer paid the rest how much did jennifer pay

Jennifer paid $108

Step-by-step explanation:

First you have to figure out how much Jennifer's parents paid. In order to do that you will have to do:

180 * 40 =  7,200     Then do: 7,200 / 100 which is 72     OR YOU CAN:

40 / 100 = .40           Then do : .40 * 72 which is 72

So Jennifer's parents paid $72.

So now you figured out how much Jennifer's parents paid, so to figure out how much Jennifer paid do:

180 - 72 which is $108.

This is how you know how much did Jennifer pay.