Last year lily was 3 times younger than Fred, and next year Lily will be three times younger than Ivan. This year Fred was 2 times younger than Ivan. How old will be Lilly when Ivan turns 10 years old?
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Answer:
Let Rahul age be
′
x
′
Raju's age be y
Given y=x−5 −−−−−−−(i)
four years later Rahul will be twice as old as Raju
x+4=2(y+4)
Substitute (i)
∴x+4=2(x−5)+8
⇒x+4=2x−10+8
⇒x=6
∴ Rahul's age =6 years
Raju's age =(x−5)=6−5=1 year'
Explanation:
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