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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 ml 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.