1. After 15 years, Roma will be 4 times as old as she is now. Find her present age.

Let the present age of Roma = x yrsAfter 15 yrs, Roma's age = x + 15 yrsNow, according to question :     x + 15 = 4xx - 4x = -15-3x = -15x = 153 = 5So, present age of Roma = 5 yrs

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