CAT
Exam
Numerical Ability
Probability
the ratio of the present ages of sunita and anita is 4:5 .six years hence the ratio of the age will be 14:17.What will be the ratio of their ages after 12 years hence.
Read Solution (Total 6)
-
- present ages be 4x and 5x
4x+6/5x+6=14x/17x(six years hence)
68x2+102x=70x2+84x
18x=2x2
x=9
present ages(4*9=36) and (5*9=45)
12 years hence(36+12=48) and (45+12=57)
ans 48 and 57 - 9 years agoHelpfull: Yes(1) No(0)
- present ages of sunita and anita is 4x,5x respectively.
six years hence,
(4x+6)/(5x+6)=14/17
17(4x+6)=14(5x+6)
68x+102=70x+84
18=2x
x=9
their present ages are 36,45
after 12 years 48,57
- 10 years agoHelpfull: Yes(0) No(0)
- anita's age will be 57 and sunita's age will be 48.
- 10 years agoHelpfull: Yes(0) No(0)
- after 6 years (4x+6)/(5x+6) = 14/17
x=9
so after 12 years sunita age will be 4x+12=48 and anita age will be 5x+12=57 - 10 years agoHelpfull: Yes(0) No(0)
- x/y=4/5 -(1) nd (x+6)/(y+6)=14/17 - (2)
after solving (1) & (2)
x=36 ,y=45
(x+12)/(y+12)=16/19
- 10 years agoHelpfull: Yes(0) No(0)
- (4x+6)/(5x+6)=(14/17) solve to get x=9 after 12years (36+12)/(45+9)
- 10 years agoHelpfull: Yes(0) No(0)
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