TCS Company Numerical Ability Percentage

how many kg of pure salt must be added to a 30kg of 2% solution of salt and water to increase it to a 10% solution?

Read Solution (Total 2)

initial salt content = (x/30)*100=2
x=.6kg
let y is added solution concentration = 10%
((y+.6)/(30+y))*100=10
10y+6=30+y
9y=24
y=8/3 kg
y=2.667kg
11 years agoHelpfull: Yes(23) No(1)

x+30=y
x+30*2%= 10%y
x+30*2%= 10%*(x+30)
x=8/3 kg
ans 8/3 kg
11 years agoHelpfull: Yes(9) No(4)

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