question_answer

Ajar contains a mixture of two liquids A and B in the ratio\[4:1\]. When 10 litres of the mixture is replaced with liquid B, the ratio becomes \[2:3\] now. The volume of liquid A present in the jar earlier was:

A) 20 liters            

B) 10 liters

C) 16 liters            

D) 15 liters

Correct Answer: C

Solution :

Initial Ratio in Jar \[=4:1\] So, 5 Ratio =10 liters Total solution \[=(10+10)=20\]liters Initial Liquid A in a jar \[=\frac{20\times 4}{5}\] \[\mathbf{=}\,\,\mathbf{16}\]  liters