Advanced Math practice question

Answer: 2

Combine: 1/x + 1/(2x) = 2/(2x) + 1/(2x) = 3/(2x). So 3/(2x) = 3/4, giving 2x = 4 and x = 2.

Common wrong answers

If you answered 1

1 gives 1 + 1/2 = 3/2, twice the target.

If you answered 4

4 comes from setting 2x = 8 (multiplying the wrong side); check: 1/4 + 1/8 = 3/8, not 3/4.

If you answered 0.5

0.5 gives 2 + 1 = 3, not 3/4.

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