Two mechanics worked on a car. The first mechanic charged $65 per hour, and the second mechanic charged $90 per hour. The mechanics worked for a combined total of 25 hours, and together they charged a total of $1750. How long did each mechanic work?

First mechanic worked 20 hours and second mechanic worked 5 hours

Step-by-step explanation:

Let the number of hours the first mechanic worked =

Let the number of hours the second mechanic worked =

Therefore, we can write 2 equations and then solve them simultaneously:

Rearranging the first equation:

and substituting into the second equation to find :

Now sub into the first equation to find

Therefore, first mechanic (a) worked 20 hours and second mechanic (b) worked 5 hours

answer: -8.2562234e+13