SAT Mathematics Practice Test 5

Question : 51 of 58

Marks: +1, -0

Horsepower and watts are units of measure of power. They are directly proportional such that5 horsepower is equal to 3730 watts. How much power, in watts, is equal to 2 horsepower?

Your Answer:

Validate

Solution:

Let x be the number of watts that is equal to 2 horsepower. Since 5 horsepower is equal to

3730

watts, it follows that

2/5=x/3730

. Solving this proportion for

x

yields

5x=7460

, or

x=7460/4=1492

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