10
QuizMultiple Choice

Unit Test — Cumulative exam

Question 10 • High School Math 2 A

Using a stopwatch, Tyrone determines it takes him 58.2 minutes to travel 30 miles to work. The stopwatch measures to hundredths of a minute. Going by the accuracy of the stopwatch, which is the most accurate determination for the number of feet per second Tyrone traveled on his way to work?1 mile = 5,280 feet

Answer
A
19.8 feet per second
B
19.84 feet per second
C
45.3 feet per second
D
45.36 feet per second

Explanation

Tyrone travels 30 × 5,280 = 158,400 feet in 58.2 × 60 = 3,492 seconds. His speed is 158,400 ÷ 3,492 ≈ 45.3608 feet per second. Rounded to the hundredth, this is 45.36 feet per second, choice D.

AI-written and checked against the verified answer.

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