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Difference
in ages: 5 Sum of
ages now: 55
in ages: 5 Sum of
ages now: 55
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
92% (02:27) correct
8%
(02:58)
wrong
based on 1102
sessions
History
Date
Time
Result
Not Attempted Yet
Two brothers were talking about how the older they get, the less significant the difference in their ages seems to be. Specifically, they noticed that, 20 years ago, the ratio of their ages (in years) was 1:2; now, the ratio is 5:6; and, 20 years from now, the ratio will be 9:10.
Based on the information provided, select for Difference in ages the difference, in years, in their ages, and select for Sum of ages now the sum, in years, of their ages now. Make only two selections, one in each column.
Based on the information provided, select for Difference in ages the difference, in years, in their ages, and select for Sum of ages now the sum, in years, of their ages now. Make only two selections, one in each column.
|
Difference in ages |
Sum of ages now |
Values |
| 5 | ||
| 10 | ||
| 15 | ||
| 20 | ||
| 35 | ||
| 55 |
ShowHide Answer
Official Answer
Difference
in ages: 5 Sum of
ages now: 55
in ages: 5 Sum of
ages now: 55
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17 Jan 2020, 12:29
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Current age of A = 5x
Current age of B = 6x
Now ratio of their ages 20 years ago = 5x-20/6x-20 =1/2 so from this x=5,so the current age of A =25 and that of B=30. And the ratio of their ages 20 years from now will be 9:10
Now per the question Difference in their ages= 5
And sum = 30+25= 55
Posted from my mobile device
Current age of B = 6x
Now ratio of their ages 20 years ago = 5x-20/6x-20 =1/2 so from this x=5,so the current age of A =25 and that of B=30. And the ratio of their ages 20 years from now will be 9:10
Now per the question Difference in their ages= 5
And sum = 30+25= 55
Posted from my mobile device
General Discussion
09 Oct 2019, 18:04
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Ans:
Difference in age: 5
Sum of age: 25+30=55
I have one more thought for this problem.
Current age is x and y respectively.
x/y = 5/6
x-y/x+y= -1/11 (Here we are talking about absolute value of difference. so consider the ration 1/11)
So sum must be multiple of 11 and then you can figure out the difference in age.
Difference in age: 5
Sum of age: 25+30=55
I have one more thought for this problem.
Current age is x and y respectively.
x/y = 5/6
x-y/x+y= -1/11 (Here we are talking about absolute value of difference. so consider the ration 1/11)
So sum must be multiple of 11 and then you can figure out the difference in age.
