Question

If two litres of water is evaporated from a 5 litre solution containing 3% salt, then what is the percentage of salt in the remaining solution?

Options

• 5%

• 2%

• 6%

• 3%

Answer 1

5%

Explanation:

Salt in 5 litre = 3% of 5 litre.

= `3/100 xx 5000` ml = 150 ml

∵ 2 liter of water is evaporated remammg water = 3 liter = 300 ml

Salt (%) = `(150  ml)/(3000  ml) xx 100` = 5%