X = rate of mechanic who worked 5 hours
y = rate of mechanic who worked 15 hours
x + y = 200
5x + 15y = 1950
you find the first variable in one of the equations, then subsitute the result into the other equation. your answer would be:
the mechanic who worked for 5 hours charged $105 per hour, the one who worked 15 hours charged $95 per hour.
hope this helps :)
V=L X W X H
1,296=6 x w x 24
1,296=144 x w
1296/144=w
9=width
Answer:
The surface area that will be painted is 376 ft2.
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