Question: Adding k to a Set

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I got confused and assumed that K is a value that is added to the for number and the new average of the 4 numbers is 10. hence got the new equation as
(sum of 4 numbers + 4K = 40).
What wordings should I be looking for on the test day to be sure.
gmat-admin's picture

You make a good point. A better way to phrase the question would have been "When k is added to the 4 numbers, the average of the 5 numbers is 10."

Having said that, if we wanted to convey that we add k to each of the 4 values, we'd write "When k is added to EACH OF the 4 numbers, the new average is 10."

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