the ratio of ages a two persons 7:11. 7yrs hence,the ratio of their ages will
let the ratio be =x
1st person=7x
2nd person =11x
A/Q
7x+7/11x+7=2/3
=21x+21=22x+14
=21x-22x=14-21
= -x=-7
=x=7
first person =7x
7x7
49 yrs
2nd person=11x
11x7=77yrs
Answers
Answered by
0
Step-by-step explanation:
Let father age is 7x
And son age is 2x
then after 15 year father age is 7x+15
After 15 year son age is 2x+15
⇒
2x+15
7x+15
=
1
2
⇒4x+30=7x+15
⇒4x−7x=15−30
⇒−3x=−15⇒x=5
Hence father present age=7×5=35
Son present age=2×5=10
difference of father and son age=35−10=25
So father age was 25 years when son was born
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