Question

A father is 15 times older than his son.However 18 years later he will be only thrice old as his son.What is father present age? ​

Answer 1

Answer:

45 years

Step-by-step explanation:

Present:

F=15S

18 years later:

F+18=3(S+18)

15S+18=3S + 54

S=3

=> F=45

Answer 2

Step-by-step explanation:

let son age = x

so fathers age = 15x

after 18 year father age = 15x+ 18

son age = x+18

to according question :

x+18=1/3(15x+18)

x+18= (15x+18)/3

3(x+18)=15x+18

3x+54= 15x+18

54-18=15x-3x

36= 12x

36/12=x

3=x

then son present age = 3year

so father present age = 15×3

= 45year