Elitmus Exam Numerical Ability Ratio and Proportion

the ratio of no of balls in bags x,y is 2:3.5 balls are taken from bag y and are dropped in bag x.number of balls are equal in each bag now.number of balls in each bag now is how much?

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something wrong
btw ans is x=20 y=30
5 balls are taken from bag y and are dropped in bag x than
x=25 and y=25
7 years agoHelpfull: Yes(1) No(0)

X : Y
2a : 3a
+5 -5
.................
1 : 1
.................

so ,
2a+5 =3a-5
10=a
initial balls=20 and 30
after change balls are 25 and 25.
2 years agoHelpfull: Yes(1) No(0)

Elitmus Other Question

a milkman makes 20% profit by selling milk mixed with water at rs 9 per liter.if the cost price of 1 liter pure milk is rs 10,then the ratio of milk and water in the mixture. a barrel contains a mixture of wine and water in the ratio of 3:1.how much fraction of the mixture must be drawn off and substituted by water so that the ratio of wine and water in the resultant mixture in the barrel becomes 1:1