1997 PMWC Problems/Problem I9
Problem
A chemist mixed an acid of 48% concentration with the same acid of 80% concentration, and then added 2 litres of distilled water to the mixed acid. As a result, he got 10 litres of the acid of 40% concentration. How many millilitre of the acid of 48% concentration that the chemist had used? (1 litre = 1000 millilitres)
Solution
Let the quantity of the 48% acid, in liters, be . Then the acid of 80% concentration has a volume of
liters.
There are millilitres of the acid.
See Also
1997 PMWC (Problems) | ||
Preceded by Problem I8 |
Followed by Problem I10 | |
I: 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 T: 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 |