Question

Vishnu's and Sivai's ages are in the ratio 10:17. 4 years ago, their age ratio were 8:15. What is Vishnu's age
after 10 years?​

Answer 1

Answer:

the answer is 30 years

Step-by-step explanation:

let Vishnu's present age be 10x and sivai's present age be 17x

Vishnu's age 4 years ago= 10x-4

Sivai's age 4 years ago= 17x-4

therefore, (10x-4)/(17x-4)=8/15

15(10x-4)=8(17x-4)

150x-60=136x-32

150x-136x=-32+60

14x=28

x=2

Vishnu's present age=10x=10*2=20

therefore, Vishnu's age after 10 years=20+10=30 years

HOPE IT HELPS....

Answer 2

Given :

• Vishnu's and Sivai's ages are in the ratio 10:17.
• Before 4 years , the ratio of their ages were 8:15.

To Find :

• Vishnu's age after 10 years.

Solution :

$\longmapsto\tt{Let\:the\:age\:of\:Vishnu\:be=10x}$

$\longmapsto\tt{Let\:the\:age\:of\:Sivai\:be=17x}$

4 yeara ago :

$\longmapsto\tt{Vishnu's\:age=10x-4}$

$\longmapsto\tt{Sivai's\:age=17x-4}$

A.T.Q :

$\longmapsto\tt{\dfrac{10x-4}{17x-4}=\dfrac{8}{15}}$

$\longmapsto\tt{15(10x-4)=8(17x-4)}$

$\longmapsto\tt{150x-60=136x-32}$

$\longmapsto\tt{150x-136x=-32+60}$

$\longmapsto\tt{14x=28}$

$\longmapsto\tt{x=\cancel\dfrac{28}{14}}$

$\longmapsto\tt\bold{x=2}$

Value of x is 2...

Therefore :

$\longmapsto\tt{Present\:age\:of\:Vishnu=10(2)}$

$\longmapsto\tt\bold{20\:yrs.}$

After 10 years :

$\longmapsto\tt{Age\:of\:Vishnu=20+10}$

$\longmapsto\tt\bold{30\:yrs.}$

Therefore, After 10 years Vishnu's age will be 30 years..