Question

Jamal works as an electrician’s apprentice. He rewired 4 electrical outlets in 1 and one-halfhours. If he works at the same pace for 7.5 hours, how many outlets will he rewire?

Answer 1

Answer: 20

Step-by-step explanation:

In 1.5 hours, the no. of electrical outlets rewired = 4

Then, in 1 hour the no. of electrical outlets rewired = 4/1.5

So, in 7.5 hours the no. of electrical outlets rewired =( 4/1.5 ) × 7.5 = 20.

Answer 2

Below

Explanation:

4 outlets/ 1.5 hr * 7.5 hr = 20 outlets ( see how 'hr' cancels out and you are left with 'outlets ?)