Question

Hari is 3 times old as Krishna. after 10 years hari s age becomes twice age of krishna.what is the difference in their ages?only tell ans not steps​

Answer 1

let krishna age be x

hari age 3x

after 10 years

krishna age  x+10

hari age (3x+10)2

now

x+10= 6x+20

-6x+x= 20-10

-5x=10

x=2

Answer 2

Answer:

Difference of Hari's age and Krishna's age is 20 yrs.

Step-by-step explanation:

Let Krishna's age = X yrs

∴ Hari's age = 3X yrs.

After 10 yrs  Krishna's age = X+10

After 10 yrs Hari's age = 3X+10

According to problem,

2 ×After 10 yrs age of Krishna= After 10 yrs age of Hari

2(X+10) = 3X +10

2X+2×10= 3X+10

3X -2X= 20 -10

       X = 10 yrs

Krishna's age = 10 yrs.

Hari's age = 3×10=30 yrs.

Difference of their ages= 30-10= 20 yrs