Latest TCS Aptitude Question SOLUTION: The ages of two friends is in the ratio 5:6. After how many years will the ages be in the ratio 7:8?

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(#M40002587) TCS aptitude question Keep an EYE

The ages of two friends is in the ratio 5:6. After how many years will the ages be in the ratio 7:8?

Asked In TCS Submited By-- Debabrata Bej (1 year ago)

Puzzle Status: Solved     By »» Ankit

Is this Puzzle helpful?   (2)   (0) Submit Your Solution

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Read Solution (10)

baidyanath  (1 year ago)

ans is 2 year
5+x/6+x=7/8
x=2

Is this solution Helpfull? Yes (11) | No (3)  

Pradeep Kumar Pandey  (1 year ago)

after 10 years

Is this solution Helpfull? Yes (5) | No (6)  

damodar reddy  (1 year ago)

5x+y/(6x+y)=7/8
y=2x,so
many solutions are present.

Is this solution Helpfull? Yes (5) | No (1)  

Arvind Pareek  (1 year ago)

5x+y/(6x+y)=7/8
y=2x,so
any answer but it is even....
so this question asked than three of them options are odd and one of them
are even we chose even answer....

Is this solution Helpfull? Yes (3) | No (1)  

Ankit  (1 year ago)

the simple method to solve this problem=
let present age are 5x and 6x
let after n year the ration become 7:8
so
5x+n/6x+n=7/8
=>40x+8n=42x+7n
=>2x=n
so there are many solution no such definite ans

Is this solution Helpfull? Yes (2) | No   

Ankit  (1 year ago)

Dear
if present age are 25/30 then its become 10 (35/40)
so data is incomplete i think
there must be 1 more relation

Is this solution Helpfull? Yes (1) | No   

ssour  (1 year ago)

undefined is the answer

Is this solution Helpfull? Yes | No (1)  

Swati Kulshrestha  (1 year ago)

Data is insufficient....

Is this solution Helpfull? Yes | No (2)  

mayu  (1 year ago)

plz someone give me the correct solution.

Is this solution Helpfull? Yes | No   

Ankit  (1 year ago)

Dears solution is 2 years
when we let the present age 5and6

Is this solution Helpfull? Yes | No   

(#M40001274) TCS MATHS PUZZLE Keep an EYE

The age of two friends is in the ratio 5:6, after how many years will the ages be in the ratio 7:8?

Asked In TCS Submited By-- MANOJ (2 year ago)

Puzzle Status: Solved     By »» Rituraj

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Read Solution (4)

Suman  (2 year ago)

The age of two friends is in the ratio 5:6, after how many years will the ages be in the ratio 7:8?

If present ages are 5x and 6x and after y years , their ages are in ratio of 7:8, then
5x+y/6x+y = 7/8 or 40x+8y= 42x+7y or y=2x; so after 2 times the Highest common factor ( in years) of their ages now , ratio of ages will be 7:8.

Is this solution Helpfull? Yes (22) | No (21)  

Rituraj  (2 year ago)

After 1/3 years of age of senior friend.
e.g.
If present ages are 5 yeras and 6 yrs, then after 6/3=2 years.
if present ages are 10/12, then after 4 years.
if present ages are 15/18, then after 6 years.
if present ages are 20/24, then after 8 years.
if present ages are 25/30, then after 10 years.

Is this solution Helpfull? Yes (15) | No (17)  

prabhat singh  (2 year ago)

let after "x" year their age will be in 7:6
s0 equation (5+x)/(6+x)=7/8
x=2yrs

Is this solution Helpfull? Yes (9) | No (26)  

ramprasad  (2 year ago)

2 yrs 5+x/6+x=7/8

Is this solution Helpfull? Yes (4) | No (15)  

(#M40002970) TCS MATHS PUZZLE Keep an EYE

The age of two friends is in the ratio 5:6,after how many years will the ages be in the ratio 7:8?

Solution

after 2 year
on adding 2 in 5 and 6 we will get 7 and 8

Like manish sir answer on facbook.

Asked In TCS Submited By-- Swarup Bal (1 year ago)

Puzzle Status: Solved

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bhuvaneshwar sharma  (1 year ago)

5+x/6+x=7/8;
x=2;

Is this solution Helpfull? Yes (3) | No   

ALKA  (1 year ago)

(5+x)/(6+x)=7/8
x=12
ans:12

Is this solution Helpfull? Yes (2) | No (12)  

(#M40003844) TCS MATHS PUZZLE LATEST TCS QUESTION Keep an EYE

The ages of two friends is in the ratio 3:4. After how many years will the ages be in the ratio 7:8?

Asked In TCS Submited By-- UN (1 year ago)

Puzzle Status: Solved     By »» sowmyamanmathan

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sowmyamanmathan  (1 year ago)

The ages are in the ratio 3:4
3+x 7
---- = --
4+x 8

cross multiply
8(3+x)=7(4+x)
24+8x=28+7x
x=28-24
x=4
After 4 years their ages will be in the ratio 7:8

Is this solution Helpfull? Yes (13) | No (2)  

Eben Praisy  (1 year ago)

after 4 years.

Is this solution Helpfull? Yes (2) | No   

santhosh  (1 year ago)

after 40 years
because if the age may be 30,40...then
after 40 years there age will be 70,80..
so the ratio is 7:8

Is this solution Helpfull? Yes (2) | No (1)  

mohammed awais  (1 year ago)

after 20 years
15/20
35/40

Is this solution Helpfull? Yes | No   

nishank gupta  (8 Month ago)

let present age is 3x and 4x
after 4 years it become 7x and 8x that is the ratio of 7:8
that our answer is 4 years

Is this solution Helpfull? Yes | No