Question

When 31 times a number is increased by 40, the answer is the same as when 200 is decreased by the number. Find the number.

Answer 1

The Answer is: 5.

Explanation:

Let n = number.

The number times 31 plus 40 is equal to 200 minus the number:

31n + 40 = 200 - n

32n = 200 - 40

32n = 160

n = 5

Proof:

31(5) + 40 = 200 - 5

155 + 40 = 195

195 = 195

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