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Answer: DSet 3: Ratios Rates Proportions (Advanced)
Explanation
PROBLEM
A car travels 156 miles at 39 miles per hour. How many hours does it take?
A car travels 156 miles at 39 miles per hour. How many hours does it take?
A.
5
B.
1
C.
3
D.✓ Correct
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Detailed Explanation
Choice D is the best answer. Time = Distance / Rate = 156 / 39 = 4 hours
Why others are wrong:
A: 5 is incorrect because it does not satisfy the equation.
B: 1 is incorrect because it does not satisfy the equation.
C: 3 is incorrect because it does not satisfy the equation.