Pooja and Deepa age is 4:5, 4 years back it was 8:11. What is the age of Pooja now?

Correct result:

p =  12


p = 4/5 • d
p-4 = 8/11 •(d-4)

4d-5p = 0
8d-11p = -12

d = 15
p = 12

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