Mira's expenditure and savings are in the ratio 3 : 2. Her income increases by 10%. Her expenditure also increases by 12%. By how much % do her savings increase?

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10%

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13%

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None of the above

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Solution

The correct option is A 7%

We get two values of x, 7 and 13. But, to get a viable answer, we must keep in mind that the central value (10) must lie between x and 12. Thus, the value of x should be 7 and not 13.
$∴$ Required % increase =7%.

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Mira's expenditure and savings are in the ratio 3 : 2. Her income increases by 10%. Her expenditure also increases by 12%. By how much % do her savings increase?

The correct option is A 7% We get two values of x, 7 and 13. But, to get a viable answer, we must keep in mind that the central value (10) must lie between x and 12. Thus, the value of x should be 7 and not 13. ∴ Required % increase =7%.

The correct option is A 7%

We get two values of x, 7 and 13. But, to get a viable answer, we must keep in mind that the central value (10) must lie between x and 12. Thus, the value of x should be 7 and not 13.
$∴$ Required % increase =7%.