Question

Kaveri's mother was 4 times as old as Kaveri 10 years ago. After 10 years her age will be twice as that of Kaveri's age. Find the present age of Kaveri.​

Answer 1

Let the mother present age be m (a is A's present age - never mind

m- 10 = 4 (a-10)

m = 4a - 30 ...[1]

m+10 = 2 (a+10)....[2]

(4a - 30 ) + 10 = 2 (a+ 10)

4a -20 =2a + 20

2a = 40 ; a= 20

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