Question a-cert

3.1 Ratios, Rates, and Proportional Relationships - Unit conversions
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A certain town has an area of 4.36 square miles. What is the area, in square yards, of this town? 1 mile=1,760 yards

A.

404

B.

7,674

C.

710,459

D.

13,505,536

A certain town has an area of 4.36 square miles. What is the area, in square

Hard-difficulty · SAT Math · Ratios, Rates, and Proportional Relationships — Unit conversions. Read the question above, select your answer, and check the full explanation below to understand exactly why the correct choice works.

Answer explanation

Choice D is correct. Since the number of yards in 1 mile is 1,760 , the number of square yards in 1 square mile is (1,760)(1,760)=3,097,600. Therefore, if the area of the town is 4.36 square miles, it is 4.36(3,097,600)=13,505,536, in square yards.

Choice A is incorrect and may result from dividing the number of yards in a mile by the square mileage of the town.

Choice B is incorrect and may result from multiplying the number of yards in a mile by the square mileage of the town.

Choice C is incorrect and may result from dividing the number of square yards in a square mile by the square mileage of the town.