Question

Two mechanics worked on a car. The first mechanic worked for
10
hours, and the second mechanic worked for
5
hours. Together they charged a total of
$1525
. What was the rate charged per hour by each mechanic if the sum of the two rates was
$200
per hour?

Answer 1

f = 1st mech , s = 2nd mech

10 f + 5 s = 1525

f + s = 200

solve the system using substitution or elimination

Answer 2

Two mechanics worked on a car. The first worked for 5 hours and the second worked for 15 hours. Together they charge a total of $1825. What was the rate charge per each mechanic if the sum of the two rates was $165 per hour

Answer 3

Two mechanics worked on a car. The first mechanic worked for hours, and the second mechanic worked for hours. Together they charged a total of . What was the rate charged per hour by each mechanic if the sum of the two rates was per hour?
Note that the ALEKS graphing calculator can be used to make computations easier.