Question

A 15 litre mixture of 20% solution in water has 15litres of water added to it.the strength of mixture as percent is

Answer 1

Mixture = 15 liter.
It contain 20% alcohal.
Alcohal = 20 % of 15 = 3 liter.
Water = 12 liter.
Now, 3 liter water is added,
Water become = 12 + 3 = 15 liter.
Toatl mixture = 15 + 3 = 18 liter.
Now, % of Alcohal into new mixture = (3*100/18) = 16.66%.

Answer 2

Answer:

10percent

Step-by-step explanation:

mix= 15l

sol=15x20/100=3l

water=12l

15 l of water added=12+15=27l

total mix=27l+3l=30l

strength of mixture= quantity of solution/quantity of mixture= 30/3x100=10percent