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Applications of Pair of Equations

How old will ...

Question

How old will Ravi be after 10 years, if his age was 'x' 10 years ago?

A

x - 20

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B

x + 10

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C

x + 20

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D

x + 30

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Solution

The correct option is C
x + 20

Given,
His age 10 years ago = $x$
$∴$ His present age = $x + 10$
His age after 10 years = $x + 10 + 10$ = $x + 20$

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Applications of Pair of Equations

Standard IX Mathematics

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