Question

twelve year hence Ravi's age will be nine times his age twelve years ago : find the presnt age

Answer 1

R+12=9(R-12)
R+12=9R-108
120=8R
R=15

Answer 2

x + 12 = 9(x-12)
solving the equ we get
8x = 120
x = 15 years.
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