Using the distance-rate-time formula, how many minutes does a 120-mile trip at 40 mph take (rounded up)?

Using the distance-rate-time formula, how many minutes does a 120-mile trip at 40 mph take (rounded up)?

• A. 180
• B. 120
• C. 240
• D. 60

Answer: (A)

Time equals distance divided by speed. So with 120 miles at 40 mph, the time is 120 / 40 = 3 hours. Convert to minutes: 3 hours × 60 minutes/hour = 180 minutes. Since the result is exact, rounding up doesn’t change it. The trip takes 180 minutes.

Time equals distance divided by speed. So with 120 miles at 40 mph, the time is 120 / 40 = 3 hours. Convert to minutes: 3 hours × 60 minutes/hour = 180 minutes. Since the result is exact, rounding up doesn’t change it. The trip takes 180 minutes.