Emily is entering a bicycle race for charity. Her mother pledged $0.40 for every 0.25 mile she biked. If Emily bikes 15 miles, how much will her mother donate?

Her mother will donate $24

Step-by-step explanation:

In order to find this, first find the unit rate. To do so, divide the amount by the number of miles it takes to get that amount.

$0.40/0.25 miles = $1.60 per mile

Now we multiply that by the total number of miles.

$1.60 per mile * 15 miles = $24