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ACCUPLACER Math Skills

#4 - Setting Up Equations for Given Situations

Sample Question:

4. An airplane flew for 8 hours at an airspeed of x miles per hour (mph), and for 7 more hours at 325 mph. If the average airspeed for the entire flight was 350 mph, which of the following equations could be used to find x ?

A. \( x + 325 = 2(350) \)

B. \( x + 7(325) = 15(350) \)

C. \( 8x - 7(325) = 350 \)

D. \( 8x + 7(325) = 2(350) \)

E. \( 8x + 7(325) = 15(350) \)

Answer: E


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