at the beginning of every gym class, mr. gordon leads the class in a warm - up. in todays warm - up, the…

at the beginning of every gym class, mr. gordon leads the class in a warm - up. in todays warm - up, the class does jumping jacks for 3 minutes. erin does 54 jumping jacks in that time. mr. gordon says the class will do jumping jacks for 4 minutes tomorrow. if erin does jumping jacks at the same rate tomorrow, how many will she do? jumping jacks

at the beginning of every gym class, mr. gordon leads the class in a warm - up. in todays warm - up, the class does jumping jacks for 3 minutes. erin does 54 jumping jacks in that time. mr. gordon says the class will do jumping jacks for 4 minutes tomorrow. if erin does jumping jacks at the same rate tomorrow, how many will she do? jumping jacks

Answer

Explanation:

Step1: Calculate Erin's rate per minute

First, find out how many jumping - jacks Erin does per minute. We know she does 54 jumping - jacks in 3 minutes. So the rate $r$ is calculated by dividing the total number of jumping - jacks by the total time. $r=\frac{54}{3}=18$ jumping - jacks per minute.

Step2: Calculate the number of jumping - jacks for 4 minutes

Since Erin's rate is 18 jumping - jacks per minute and she will jump for 4 minutes tomorrow, the total number of jumping - jacks $n$ she will do is found by multiplying the rate by the time. $n = 18\times4=72$.

Answer:

72