Question

two mechanics worked on a car the first mechanic worked for 10 hours in the second mechanic worked for 15 hours together they charged a total of $2,450 what was the rate charge per hour by each mechanic if the sum of the two rates was $185 per hour

Answer 1

wo mechanics worked on a car the first mechanic worked for 10 hours and the second mechanic worked for 15 hours together they charged a total of $2,450 what was the rate charge per hour by each mechanic if the sum of the two rates was $185 per hour

Let

x -----> the rate of the first mechanic

y -----> the rate of the second mechanic

we have that

x+y=185 -------> equation A

10x+15y=2,450 ------> equation B

Solve the system of equations by graphing

see the attached figure

therefore

the rate of the first mechanic is $65 per hour

the rate of the second mechanic is $120 per hour