Digital PSAT Math Practice Question 185: Answer and Explanation
Question: 185
The variables m and n have a directly proportional relationship, given by the equation m = kn where k is a constant of proportionality. When m = 10, n = 2. What will be the value of n if m is 38?
Correct Answer: 7.6
Explanation:
(7.6) Plug in the given values for m and n to determine what the value of the constant k is:
Now, plug 38 in for m and 5 for k to get the value of n:
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