Question

FIND THE SUM
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Answer 1

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Answer 2

Answer:

Age of elder friend is 15

and age of other friend is 9

Step-by-step explanation:

Let the common multiple be x

:. the age of elder friend = 5x

and other friend = 3x

:. according to 1st given condition

elder friend/ other friend = 5x/3x

:. their age 5 yrs hence

5x+5/3x+5= 10/7

:. 7(5x+5) = 10(3x+5)

:. 35x+35 = 30x+50

:. 35x-30x = 50- 35

:. 5x = 15

:. x = 15/5

:. x = 3

:. age of elder friend =5x

:. = 5× 3

:. age of elder friend = 15

and

age of other friend = 3x

:. =3×3

:. age of other friend = 9