Question

Tracy can jump rope 26 times in

1 minute. How many times can
she jump rope in 90 seconds?

Answer 1

Since Tracy can jump rope 26 times in a minute, we can make a equation.

• 
  `1\:minute=60\:seconds`

Now here is our equation

`(26)/(60) =(x)/(90)`

cross-multiply

`60x=2340`

do simple algebra and divide

`x=39`

Tracy can jump rope 39 times in 90 seconds.