Two mechanics worked on a car. First mechanic worked 20 hours, and the second worked 5 hours. Together the charged $1800. What was the rate charge by each if the some of both rates was 135 per hour?

Question

Mathematics

Con

8 November, 22:24

Two mechanics worked on a car. First mechanic worked 20 hours, and the second worked 5 hours. Together the charged $1800. What was the rate charge by each if the some of both rates was 135 per hour?

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Answers (1)

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Thalia Bradley · Answer 1

Step-by-step explanation:

let one charge=x

second charge=135-x

20x + (135-x) 5=1800

4 x+135-x=360

3x=360-135=225

x=75 $

first charges $ 75 for 20 hours

second charges = 135-75=$60 for 5 hours.