Question

after 18 years Rita will be thrice as old as she is now find her present age

Answer 1

Let the present age of Rita be x

After 18 years

x + 18 = 3x

2x = 18

x = 9

Therefore, Rita's present age = 9 yrs

Answer 2

Rita  is x years old. In 18 years she will be x+18 years old. That age is three times her current age: x+18 = 3x

18 = 2x

x=9 years old.

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