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Maths Puzzle
If 50% of (x-y)=30% of (x+y), then what percent of x is y ?
Read Solution (Total 7)
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- 25% of x=y.
sol:-
According to the problem,
(1/2)*(x-y)=(3/10)*(x+y)
2x=8y
(1/4)*x=y
(100/4)% of x=y
25% of x=y proved. - 12 years agoHelpfull: Yes(7) No(0)
- 50*(x-y)/100=30(x+y)/100
5x-5y=3x+3y
2x=8y
x=4y
now required percentage is y*100/x
y*100/4y=25% - 12 years agoHelpfull: Yes(2) No(4)
- solving equation,x=4y=>y=1/4x
=25% of x
- 12 years agoHelpfull: Yes(1) No(4)
- (x-y)(50/100)=(x+y)*(30/100)
=> 50(x-y)=30(x+y) => 5(x-y)=3(x+y)
=> 5x-5y=3x+3y
=> 2x=8y
=> x=4y
we have to find the percentage of y.
(y/x)*100
=> (y/4y)*100 (By substituting x=4y)
=> 25% - 12 years agoHelpfull: Yes(1) No(2)
- Ans: X is 400% of Y.
50(X-Y)=30(X+Y)
By solving the above equation we have answer X=4Y - 12 years agoHelpfull: Yes(0) No(7)
- 5(x-y)=3(x+y)
2x=8y
yx=(28)
yx=(14)
%(yx)=(14)*100
%(yx)=25% - 12 years agoHelpfull: Yes(0) No(1)
- (x-y)(50/100)=(x+y)*(30/100)
=> 50(x-y)=30(x+y) => 5(x-y)=3(x+y)
=> 5x-5y=3x+3y ;
=> x=4y;
Now we hav to find the %age of y/x%
=>(y/4y)*100 (substituting x=4y)
=> 25% (Ans) - 12 years agoHelpfull: Yes(0) No(1)
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