RRB Junior Engineer Stage 1 Model Papers 9

Question : 20 of 100

Marks: +1, -0

A vessel full of pure acid contains 10 litres of it, of which 2 litres are withdrawn. The vessel is then filled with water. Next 2 litres of the mixture are withdrawn, and again the vessel is filled up with water. The ratio of the acid left in the vessel with that of the original quantity is

1 : 5
4 : 5
4 : 25
16 : 25

Validate

Solution:

Quantity of acid left

=10(1-2/10)^2=32/5

Required ratio

=32/{5×10}=16/25=16:25

Go to Question:

Prev Question

Next Question