Practice mode Problems on Numbers

The sum of three consecutive multiples of 7 is 357. What is the largest of these multiples?

Correct answer B. 126

Explanation

Let them be 7k, 7k + 7 and 7k + 14. Then 21k + 21 = 357, so k = 16 and the largest is 7 x 18 = 126.

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