Question

Batman is 4 times robins age the sum of their ages equals to 45 how old is batman and robin

Answer 1

Let's say that Batman's age is b, and Robin's age is r.

We can set up a system of equations as such with the given information:


`b=4r\\b+r=45`

Using substitution, we plug-in 4r from the first equation into b in the second equation to get
`5r=45 \\ r=9`.

Now, we plug in the value of r into the first equation to get
`b=4(9)=36`.

Thus, Batman is 36 years old, and Robin is 9 years old... A little weird?

Answer 2

robins 9 and batmann he old xD (36)