Convert 11.42424242 to a rational expression in the form of a/b , where b ≠ 0.

a 11 42/999
b 11 42/
c 11 42/99
d 11 99/42

11.424242
isolate the repeating part
11+0.424242

focus on the repeating part
0.42424242
how many places till it repeats again?
2
let's say it is x
x=0.42424242
multiply by 100
100x=42.424242

subtract them
100x-x=42.42424242-0.42424242
the infinite repeats cancel and we get
99x=42
divide by 99


so

For the first question the answer is a, for the second c, for the third d, for the 4th b, for the 5th a