Question

The number which when added to its half gives 30. The number is___
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Answer 1

Answer:

We;ll call the number "X". So we know that X plus X/2 (i.e., half of X) equals 30. So your equation is:

X+ X/2= 30. To simplify, multiply both sides by 2 to get rid of the divisor. So you end up with

2x+ x= 60, or 3X=60.

So, divide both sides by 3, and x is 20. 20 + 10 = 30.