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The age of B is 50% greater than the age...

The age of B is 50% greater than the age of A. The age of C is 20% less than the age of B. By how much percentage the age of C is greater than the age of A.

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`underset100 A overset(+50%)rarr underset150B overset(-20%)rarr underset120C`
So the required percentage change =`20/100xx100=20%`
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