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In 40 seconds, a mountain biker travels 230 feet. What is her speed in miles per hour? (Note: 1 mile = 5280 feet)
A. \(\dfrac{230\cdot 60\cdot 60}{40\cdot 5280}\)
B. \(\dfrac{230\cdot 5280}{40\cdot 60\cdot 60}\)
C. \(\dfrac{40\cdot 60\cdot 60}{230\cdot 5280}\)
D. \(\dfrac{40\cdot 60\cdot 60\cdot 230}{5280}\)
E. \(\dfrac{40\cdot 60\cdot 60\cdot 5280}{230}\)
Answer: A
Source: Princeton Review
A. \(\dfrac{230\cdot 60\cdot 60}{40\cdot 5280}\)
B. \(\dfrac{230\cdot 5280}{40\cdot 60\cdot 60}\)
C. \(\dfrac{40\cdot 60\cdot 60}{230\cdot 5280}\)
D. \(\dfrac{40\cdot 60\cdot 60\cdot 230}{5280}\)
E. \(\dfrac{40\cdot 60\cdot 60\cdot 5280}{230}\)
Answer: A
Source: Princeton Review
