Question

Delilah does 841 jumping jacks in 4 minutes. She does her jumping jacks at a constant rate. How many jumping jacks can Delilah do per minute?

Answer 1

841 jumping jacks per 4 minutes

$\frac{841~jumping~jacks}{4~minutes}$

Divide both sides by 4.

$\frac{841}{4} \div \frac{4}{4} = \frac{210.25}{1}$

Delilah can do 210.25 (or 210) jumping jacks per minute.