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Question

The sum of ages of Sumit and Deepika is 30 years. If Sumit is elder to Deepika by 6 years, what is Deepika's age?

A
18
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B
15
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C
12
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D
10
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Solution

The correct option is C 12
Let Sumit's age be x and Deepika's age be y.
Then, by question, we have x+y=30...(1) and x=y+6,i.e.xy=6....(2)
Adding (1) and (2), we have 2x=36x=18
y=30x=3018=12

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