Chapter A.8, Problem 33AYU

To determine

To find: How long would it take them to deliver the newspapers if they worked together?

Answer to Problem 33AYU

Working together it takes 12 minutes.

Explanation of Solution

Given:

Trent can deliver his newspapers in 30 minutes. It takes Lois 20 minutes to do the same route. How long would it take them to deliver the newspapers if they worked together?

Calculation:

$\frac{1}{30}+\frac{1}{20}=\frac{1}{t}$

$2t+3t=60$

$5t=60$

$t=12$

Therefore 12 minutes to deliver the newspapers worked together.