Answer:
1/4
Step-by-step explanation:
So, we can create this representation of a in relation with b, since we know a is smaller than b by 1/5 of b, we can say that a is equal to 4/5 of b, right?
[tex]a = \frac{4}{5} b[/tex]
To invert the ratio, we need to isolate B, so we multiply both sides of the equation by 5/4
[tex]a * \frac{5}{4} = * \frac{5}{4} * \frac{4}{5} b = b\\ \\ b = \frac{5}{4} a[/tex]
So, we have b being 1/4 bigger than a.
