Question

Alphonse spends 28 dollars on food. this amount is 4/9 of his allowance. calculate his allowance

Answer 1

X $ -- Allowence

$\frac{4}{9}*x=28 \ |:\frac{4}{9}\\\\ x=\not28^7\cdot \frac{9}{\not4^1}\\\\ x=7*9\\\\ x=63$

Answer:
$63

Answer 2

Say the total allowance is X.
4/9X=$28
Therefore 28/(4/9) = $63