A salt solution has 5% salt. If 100 litres of water evaporated, the amount of salt is 15%. How much was the solution in the Beginning?
Answer & explanation
Correct answer: option 1
5% = \(\frac{1}{20}\)
15% = \(\frac{3}{20}\)
Salt Water
Before evaporation 1 19
After evaporation 3 17
*The quantity of the salt must be same before and after evaporation*
Salt Water
Before evaporation 3×( 1 19 )
After evaporation 3 17
Salt Water
Before evaporation 3 57
After evaporation 3 17
Water evaporated = 57 - 17 = 40 (57 + 3)= 60 (Total)
↓ ↓
×2.5 ×2.5
↓ ↓
100 (Given) 150