Book Maths Puzzle Algebra

Three consecutive odd counting numbers have the property that the sum of the largest and twice the smallest is 91. What is the middle number?

Read Solution (Total 1)

31

Let the 3 consecutive odd numbers be (x-2),x and (x+2)

(x+2) + 2*(x-2) = 91
3x - 2 = 91
3x = 93
x = 31

middle number = 31
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