Chapter SH, Problem 1.5EP

To determine

To find the number of hours A spent mowing

Answer to Problem 1.5EP

12 hours

Explanation of Solution

Given information:

A mows average 40 minutes per lawn

Formula used:

Multiplication

Calculation: A mowed total of $3+11+4$ lawn

It took him average 40 minutes per lawn, so 40 multiplied by number of lawns will determine total number of minutes A mowed

  $40(3+11+4)$

Solving it further

  $40\times 18=720$ Minutes

According to the question the answer should be in hours, so dividing the answer by 60

  $\frac{720}{60}$ Minutes

The final answer is

  $12hours$