Question

Adil tells his dad that the ratio of their present ages is 8:3. After 10
years, their ages will be in the ratio of 2:1. How old is Adil's father
currently?
49 years
51 years
43 years
40 years

Ravi msg dekho-_-​

Answer 1

Answer:

We have,

Let, percentage, 8x,3x

Then, after 10 year;

3x+10

8x+10

=

1

2

8x+10=6x+20

8x−6x=20+10

2x=10

x=

2

10

x=5

∴ Present age of father,

=8x

=8×5

=40 years

Hence, this is answer.

Answer 2

We have,

Let, percentage, 8x,3x

Then, after 10 year;

3x+10

8x+10

=

1

2

8x+10=6x+20

8x−6x=20+10

2x=10

x=

2

10

x=5

∴ Present age of father,

=8x

=8×5

=40 years

Hence, this is answer.