the ages of sunita and radha are in the ratio 7:5. eight years ago their ages were in the ratio 13:7. what are their present age.
Answers
Answered by
10
let their present ages are 7x and 5x
8years ago
___________
7x-8÷5x-8=13/7
=>49x-56=65x-104
=>65x-49x=104-56
=>16x=48
=>x=48/16=3
now their present ages are
7x=7*3=21 yr
and 5x=5*3=15 yr
€.....................€
8years ago
___________
7x-8÷5x-8=13/7
=>49x-56=65x-104
=>65x-49x=104-56
=>16x=48
=>x=48/16=3
now their present ages are
7x=7*3=21 yr
and 5x=5*3=15 yr
€.....................€
Answered by
8
7x - 8/5x - 8 = 13/7
7(7x-8)=13(5x-8)
49x-56=65x-104
-56+104=65x-49x
48=16x
x=3
Their present ages are 21 and 15.
7(7x-8)=13(5x-8)
49x-56=65x-104
-56+104=65x-49x
48=16x
x=3
Their present ages are 21 and 15.
Similar questions