Discussion Forum



1)

A 10 litres solution of water and salt contains 150 gm salt.If 25% of solution gets evaporated what % of salt would the remaining solution have?


A) 1.5%

B) 2%

C) 1.75%

D) 2.5%

Answer:

Option B

Explanation:

1 litres=1000 gm, 10 litres=10,000 gm,Salt =150 gm

Water=10,000-150=9850 gm

In 10 litres solution, 25% of solution gets evaporated

Then, water =9850-2500=7350

Solution =10,000-2500=7500

Required % of salt $\frac{150}{7500}\times 100=2%$