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### Primary 5 Problem Sums/Word Problems - Try FREE

- Decimals: Did you know that a decimal is a fraction? > Decimals Exercise 20 > 1
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**Question
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In a science laboratory, Eva had 3 bottles labelled P, Q and R with some acid in each one of them.

At first, she transferred `1/9` of the acid from P to Q.

Next, she transferred `1/9` of the acid from Q to R.

Finally, she transferred `1/9` of the acid from R to P.

In the end, each of the bottles P, Q and R had 400 m*l* of acid in them.

(a) What was the amount of acid in bottle P at first?

(b) What was the amount of acid in bottle Q at first?

(c) What was the amount of acid in bottle R at first?

*Notes to student:*

*If the question above has parts, (e.g. (a) and (b)), given that the answer for part (a) is 10 and the answer for part (b) is 12, give your answer as:10,12**All units to the answers are in ml.*

The correct answer is :

**393.75,406.25,400**