18.The sum of ages of A and his father is 100. When A is as old as his

1.	18.The sum of ages of A and his father is 100. When A is as old as his father now, he will five times asIfold as his son Bisnow. B will be eight years older than Ais now when Ais as old as his father. Whatare their present ages?allos, of lead and steel contains 60% lead. How much lead must be melted into it toBot
Answer» LetLet age of Anup is x yrs thus, Father's age= (100-x) Anuj's age = (100-x)/5 Eq. 1 (Translating 2nd last line#) (100-x)-x+(100-x)/5=x+8 600-11x=5x+40 16x=540 x =35 yrs age of Anup is 35 yrs age of Anuj is 13yrs age of Anup's father is 65yrs Note: Anup is A and Anuj is B

18.The sum of ages of A and his father is 100. When A is as old as his father now, he will five times asIfold as his son Bisnow. B will be eight years older than Ais now when Ais as old as his father. Whatare their present ages?allos, of lead and steel contains 60% lead. How much lead must be melted into it toBot

Answer»

LetLet age of Anup is x yrs

thus, Father's age= (100-x)

Anuj's age = (100-x)/5

Eq. 1 (Translating 2nd last line#)

(100-x)-x+(100-x)/5=x+8

600-11x=5x+40

16x=540

x =35 yrs

age of Anup is 35 yrs

age of Anuj is 13yrs

age of Anup's father is 65yrs

Note: Anup is A and Anuj is B