3 subtracted from a number and the result multiplied by 2, gives 10. What is the number?

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Solution

The number before 2 was multiplied = 10 ÷ 2 = 5

5 is obtained by subtracting 3 from the required number.

∴ Required number = 5 + 3 = 8

Thus, 3 subtracted from 8 and the result, when multiplied by 2, gives 10.

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