While on his way to a destination, Mr. Hock raised his speed by 25%. After maintaining that speed for a while, he then decreased his speed by 10%. Following this reduction, Mr. Hock's speed was recorded at 45 km/hour. What was Mr. Hock's initial speed?

Answer Choices

Correct answer marked below

36 km/hour

40 km/hour

Correct

42 km/hour

44 km/hour

48 km/hour

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Explanation

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Official Explanation

Official

After the reduction, Mr. Hock's speed was 45 km/hour. To find the speed before the reduction, we calculate it as follows: 45 * 100 / 90 = 50 km/hour. This speed of 50…

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Comments

JonatasMay 9, 2024

thankss

AnkitaFeb 26, 2025

Thank for sharing!

What this question tests

What it tests

Your application of distance = rate × time to trains, boats, and commuters, including relative speed.

Common trap

Mixing units (miles per hour vs. minutes) or averaging speeds — average speed is total distance over total time.