A 15 litre mixture of 20% solution in water has 15litres of water added to it.the strength of mixture as percent is
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3
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%.
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%.
Answered by
1
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
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