It would be 7:9 because if you divide each side by 4 then you can get it in simplest form
If you are rounding it will be the same thing
The most he can buy for each cupcake is 1.25
A 9-kg bag of mangoes for $12
ANSWER

EXPLANATION
The given expression is

We identity and remove the perfect squares to obtain

We now observe that, the three terms are all similar.
We combine the similar terms to get:
