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PSAT Math Multiple-Choice Practice Question 578

Question: 578

A researcher surveyed several residents in a town about the types of vehicles the residents own. The results are shown in the table below.
CarVanTruck/SUVTotal
Gas1043143178
Hybrid101mn
Electric6309
Total1203545200

What are the values of m and n in the table above

Correct Answer: C

Explanation:

(C) The value of m must be 2. All of the trucks and SUVs must add up to a total of 45, and there are 43 of the other truck/SUV types: 43 + 2 = 45. The value of n must be 13. The total of all the different types of vehicles must add up to 200. The numbers in the last column show a total of 178 + 9 = 187 and 187 + 13 = 200.

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