Question

Batman is 4 times Robins age . The sum of their ages is equal to 45. How old is Batman and Robin?

Answer 1

Robin is x Batman is 4x
sum is 5x and it equals 45
Robin is 9 (x) and Batman 36

Answer 2

Let age of Robins=r
Then age of Batman =4r
Sum of ages=45
r+4r=45
5r=45
r=9
Age of Robin= 9 years
Age of batman=4(9)= 36 years

Answer: Robin is 9 years old and Batman is 36 years old.