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Jack is trying to make extra money on his summer vacation from school. He works two different jobs, earning $9 per hour washing cars and $6 per hour walking dogs. How much money would Jack earn in a week in which he worked 5 hours washing cars and 2 hours walking dogs? How much money would Jack earn in a week in which he worked w w hours washing cars and d d hours walking dogs? 5 hours washing cars and 2 hours walking dogs: w w hours washing cars and d d hours walking dogs:

1 Answer

4 votes

Answer:

$57


9w+6d

Explanation:

Given that:

Earnings per hour for washing cars = $9

Earnings per hour for walking dogs = $6

Number of hours for which car washing is done =
w

Number of hours taken for walking dogs =
d

Earnings for
w hours for washing cars = Per hour earnings multiplied by number of hours = $9
w

Earnings for
d hours for walking dogs = Per hour earnings multiplied by number of hours = $6
d

Total earnings by both = $(
9w+6d)

Now, given that

Number of hours spent washing cars = 5 hours

Number of hours spent walking dogs = 2 hours

Therefore, total earnings by both = 9
* 5 + 6
* 2 = $57

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