Question

An automated car wash service has washed 67 cars so far this week. The business averages 260 cars per week.

a. What percent of the total expected cars have already been​ washed?
b. If 15​% of the cars also get a wax​ job, how many wax jobs are done each​ week?

Answer 1

a) 25.8%

b) 39

Explanation:

Given information:

• An automated car wash service has washed 67 cars so far this week.
• The business averages 260 cars per week.

Part a

To find the percent of the total expected cars that have already been washed, divide the number of cars already washed by the average number of cars washed per week:

`\implies (67)/(260)=0.257692307...=25.8\%\; \sf (nearest\;tenth)`

Part b

To find the number of cars that get a wax job each week, find 15% of 260:

`\begin{aligned}\implies 15\%\; \textsf{of}\;260&=(15)/(100) * 260\\\\&=(3900)/(100)\\\\&=39\end{aligned}`

Therefore, 39 wax jobs are done each week.

Answer 2

• a) ≈ 25.77%
• b) 39 wax jobs

Explanation:

a) Percent of already washed cars?

→ (67/260) × 100

→ 6700/260

→ 25.769

→ ≈ 25.77%

b) Wax job done each week will be?

→ (260/100) × 15

→ 2.6 × 15

→ 39 wax jobs

Hence, these are required answers.