Title?
Work Example ?
ACT
Work Keys Level:
6
NATEF Task(s):
VIII.F.3
Problem:
A vehicle is getting 20 miles per gallon (mpg) with the engine operating at approximately 180°F. For each 10° increase in engine operating temperature above 160° the fuel economy will increase 2.5%. If the 180° thermostat is removed and replaced with a 200° thermostat, what will be the new mpg?Solution:
Replacing the 180° thermostat with a 200° thermostat equals a 20° increase in operation temperature.
Therefore, 20 mpg × 2.5% (0.025)
= 0.5 mpg, and
20 mpg + 0.5 mpg = 20.5 mpg