Question

As the manager of an auto repair shop, you decide to compile some statistics on the cars you service. Last week your shop serviced 72 cars. On 12 of these cars you replaced the muffler. Express this as a percent of cars serviced that needed mufflers.

Answer 1

16.67% ( approx )

Explanation:

Given,

Total number of serviced car = 72,

Out of these, the number of cars serviced that needed mufflers = 12,

Thus, the percent of cars serviced that needed mufflers

`=\frac{\text{Cars that needed mufflers}}{\text{total serviced cars}}* 100`

`=(12)/(72)* 100`

`=(1200)/(72)`

`\approx 16.67\%`

Answer 2

17 %

Explanation:

12 of 72 cars needed mufflers

% = cars needing mufflers/total cars × 100 %

= 12/72 × 100 %

= 17 %

17 % of the cars serviced needed muflers.