There is 20 litre solution containing 10 water and 90 spirit How much water should be added to make the

this problem can easily be solved using allegation...
solution containing 10% of water has to be mixed with solution containing 100% water

10% 100%
25%
75% 15% therefore the ratio is 5:1... that is fr 5 parts of 10% solution we have to add 1 part of 100% solution.

(20/5)*1 = 4ltrs
10 years agoHelpfull: Yes(4) No(0)
25x20/100= 5 Ltr.
10 years agoHelpfull: Yes(2) No(1)
10% (20) = 2
(2 + x)/( 20+ x) = 25/100
so x = 4 litre
9 years agoHelpfull: Yes(0) No(0)
water...(10/100)*20 = 2 liter
2 lit..............................10/100
???....................................25/100
so ?*10/100 = 2*25/100
answer is 5 but out of 5 liters we should add 3 liters to make the solution containing 25% of water

proof: already it has 10% water + (3/20)*100.............15% =25%
7 years agoHelpfull: Yes(0) No(0)
Sorry.. I think answer 3 lit is wrong because once extra water is added to the solution then automatically solution level will be increased
I calculated with out incrementing the solution level
20 lit + x.................... 100
2 lit + x....................... 25
25(20+x) = 100(2+x)
X = 4 lit
7 years agoHelpfull: Yes(0) No(0)

There is 20 litre solution containing 10% water and 90%
spirit. How much water should be added to make the solution
containing 25% water?