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Question
Ravi is 4 years older than Shalini. If the ratio between their ages is 7:9, how old is Shalini?
Ravi is 4 years older than Shalini. If the ratio between their ages is 7:9, how old is Shalini?
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Solution
The correct option is E None of these
Let Shalini's age be x years.
Then, Ravi's age = (x + 7) year
∴xx+4=79⇔9x−7x=28⇔2x=28⇔x=14.
None of these
Let Shalini's age be x years.
Then, Ravi's age = (x + 7) year
∴xx+4=79⇔9x−7x=28⇔2x=28⇔x=14.
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