Question

michael earned $27 mowing lawns. He earned $12 ess than that washing windows. He earned 3 times as much money walking dogs as he earned washing windows. How much money did Michael earn walking dogs? How much did earn all together?

Answer 1

Part 1) Michael earned walking dogs $45

Part 2) Michael earned all together $87

Explanation:

Part 1) How much money did Michael earn walking dogs?

Let

x ----> money earned mowing lawns

y ---> money earned washing windows

z ---> money earned walking dogs

we know that

x=$27

y=x-12-----------> y=27-12=$15

z=3y ---> z=3*15=$45

Part 2) How much did earn all together?

Adds the amount that Michael earned mowing lawns plus the amount that earned washing windows plus the amount that earned walking dogs

so

x+y+z

x+y+z=27+15+45=$87