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25 Apr 2019, 23:13
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energetics
You would still not know the amount invested at x% and the amount invested at y%.
If interest earned is 2448 at x%, what is the amount on which this interest is earned?
You could earn 2448 interest at 10% on 24480.
or you could earn 2448 interest at 5% on 48960.
etc.
x would be different in each case.
here are my two cents for this question
Sample.png [ 9.88 KiB | Viewed 3450 times ]
Avg interest is \( \frac{4080}{60,000} \) =6.8 ( hidden information in Stem)
Using concept of allegations
We have a information that is represented by figure 1 ( From Question Stem)
we can see that we need values of X or Y and 'a' or 'b'. IN this regard if we have any relation in term of X and Y and some relation between 'a' and 'b' .
Now from statement 1:
we have a relation between X and Y but we don't have any relation or values of 'a' and 'b'.
Now from statement 2:
"The ratio of the amount that earned interest at the rate of x percent per year to the amount that earned interest at the rate of y percent per year was 3 to 2." This information gives a relation between 'a' and 'b'
But in absence of any information regarding "X" and "Y" we cannot find out the value of "X"
Combining both statements we do have information of "x" and "y" and also information about 'a' and 'b'
Hence Answer C
Avg interest is \( \frac{4080}{60,000} \) =6.8 ( hidden information in Stem)
Attachment:
Sample.png [ 9.88 KiB | Viewed 3450 times ]
Avg interest is \( \frac{4080}{60,000} \) =6.8 ( hidden information in Stem)
Using concept of allegations
We have a information that is represented by figure 1 ( From Question Stem)
we can see that we need values of X or Y and 'a' or 'b'. IN this regard if we have any relation in term of X and Y and some relation between 'a' and 'b' .
Now from statement 1:
we have a relation between X and Y but we don't have any relation or values of 'a' and 'b'.
Now from statement 2:
"The ratio of the amount that earned interest at the rate of x percent per year to the amount that earned interest at the rate of y percent per year was 3 to 2." This information gives a relation between 'a' and 'b'
But in absence of any information regarding "X" and "Y" we cannot find out the value of "X"
Combining both statements we do have information of "x" and "y" and also information about 'a' and 'b'
Hence Answer C
Avg interest is \( \frac{4080}{60,000} \) =6.8 ( hidden information in Stem)
avigutman
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Joined: 17 Jul 2019
Last visit: 30 Sep 2025
Posts: 1,285
Given Kudos: 66
Location: Canada
Schools: NYU Stern (WA)
GMAT 1: 780 Q51 V45
GMAT 2: 780 Q50 V47
GMAT 3: 770 Q50 V45
Expert reply
11 Sep 2021, 12:59
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Video solution from Quant Reasoning:
Subscribe for more: https://www.youtube.com/QuantReasoning? ... irmation=1
Subscribe for more: https://www.youtube.com/QuantReasoning? ... irmation=1
