Question

How many liters in a 40 liter solution containing 12% alcohol

Pour water so that the alcohol content is 8%​

Answer 1

Answer:

litres of alcohol = (12/100)*40=1.2*4=4.2 litres

Given: alcohol content=8%

:.4.2=8%

:.1%=4.2/8 litres

:.(40-4.2)=35.8

:.35.8=(4.2/8)100=2.1*25=52.5%

:.percentage of water to be added = 100 - (52.5 + 8)=100-60.5=39.5%

:.39.5%=(4.2/8)39.5 litres=20.7375 litres (ans)