Algebra practice question

Answer: 20

(3/4)s = 15 gives s = 20.

Common wrong answers

If you answered 60

60 treats 15 as one quarter of the total.

If you answered 18.75

18.75 adds a quarter of 15 to 15.

If you answered 11.25

11.25 takes a quarter away from 15 again.

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