Solve.
-In a practice run, a race car driver's speed is clocked at 141.456 mph at the end of his first lap, and at 165.917 mph at the end of the next lap. How much faster was he driving at the end of the second lap?
A)24.561 mph
B)23.461 mph
C)24.461 mph
D)24.471 mph

Question

Quizplus · Accepted Answer

To find the difference in speed between the two laps, we subtract the speed at the end of the first lap from the speed at the end of the second lap:
165.917 mph - 141.456 mph = 24.461 mph

Therefore, the driver was driving 24.461 mph faster at the end of the second lap than at the end of the first lap. The correct answer is choice C. The difference between the two speeds is 165.917 mph - 141.456 mph = 24.461 mph. So he was driving 24.461 mph faster at the end of the second lap. Therefore, the answer is choice C, 24.461 mph.

Solve. -In a Practice Run, a Race Car Driver's Speed Is