Latest TCS Aptitude Question SOLUTION: age of the 2 people are in ratio 6:5 after how many years,their ratio will be 8:7

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age of the 2 people are in ratio 6:5 after how many years,their ratio will be 8:7

Asked In TCS Ranjini (13 years ago)

Solved Lalit Kaushik Read Solution (7)

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Read Solution (7) :

Lalit Kaushik  (13 years ago)

Question incomplete
and question is=
The age of the two friends were in the ration of 6:5. If the sum of their ages is 55. Then after how many years their ratio will become 8:7?
a) 11 b) 7 c) 10 d) 12

ans=c

Is this solution Helpfull? Yes (19) | No (3)  

ananya gupta  (11 years ago)

since given ratio is 6:5 of their ages.
6x+5x=55(given)
11x=55
x=5. so present ages are: 6*5=30 and 5*5=25
after few yrs ratio becomes 8:5.
so,their ages will become 8x and 7x respectively, ie. 40 and 35 respectively.
nw difference of their current ages and further ages is clear from above... ie. 10 yrs. ans c

Is this solution Helpfull? Yes (12) | No (1)  

Bawa  (13 years ago)

After 1/3 rd of age of elder person in years.
If ages are 6x and 5x now then
after y yrs ,
6x+y/5x+y =8/7 .... 42x+7y = 40x +8y or y=2x where x is 1/6 of age of senior person. and hence y is equal to 1/3 rd of age of elder person in years.

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appalanaidu.m  (13 years ago)

* first assume ,two people's age is 6x and 5x respectively.
* ofter 'm' years two people's age ratio is (6x+m)/(5x+m)= 8:7
* then we will solve and we will get answer is 2

Is this solution Helpfull? Yes (1) | No (6)  

Biswajyoti Biswas  (13 years ago)

i think 2 yrs....
suppose their age =6x & 5x...& y=no. of yrs...
so,6x+y/5x+y=8/7
by solvin i get y=2....
if wrong email me the correct one ...(papaionly@gmail.com)

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

Gunnampalli Shiva Prakash Reddy  (8 years ago)

cant solve

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sailee satish jadhav  (8 years ago)

consider after z years the ratio would be :
6+z/5+z=7/8
7(6+z)=8(5+z)
42+7z=40+8z
8z-7z=42-40
1z=2
thus answer=2

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