Question

Ella finished a bike race in 37.6 minutes. Miranda finished the race 9 1/10 minutes sooner than Ella finished it. How many minutes did it take Miranda to finish the race?A. 32.5 minutes B. 46.7 minutes C. 28.59 minutes D. not here

Answer 1

The time that it took Ella to finish the race is: 37.6 minutes.

Since Miranda finished the race 9 1/10 minutes sooner, to find Miranda's time we need to subtract 9 1/10 from Ella's time of 37.6 minutes.

Miranda's time:

`37.6-9(1)/(10)`

To solve the problem it is easier if we convert 9 1/10 to a decimal number. Since 1/10 is equal to .1, the equivalent value of 9 1/10 is:

`9(1)/(10)=9.1`

Updating the expression to find Miranda's time:

`37.6-9.1`

And the result of the subtraction is:

`28.5`

It took Miranda 28.5 minutes to finish the race. Since this value is not one of our options, the answer is D. not here