A water tank lost 12.5% of its water through a leak and now holds 1,050 litres. How much water did it hold before the leak?

918.75 litresCorrect answerYour answer1,062.5 litresCorrect answerYour answer1,181.25 litresCorrect answerYour answer1,200 litresCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer D

Correct answer: D

After the leak the tank holds 87.5% of the original.
Original = $\frac{1050}{0.875} = 1{,}200$ litres.

Worth noting

Adding 12.5% of 1,050 gives 1,181.25 litres — the 12.5% was of the ORIGINAL amount. Tip: $12.5\% = \frac{1}{8}$ , so 1,050 is $\frac{7}{8}$ of the original.

Concept: Reverse percentage after a decrease
Typical timeTypical: 60 s
Your timeYours: —

The rule this testsPercentage change

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Ten questions from Percentages, at your own pace.

A water tank lost 12.5% of its water through a leak and now holds 1,050 litres. How much water did it hold before the leak?

Explanation