Question

?/? X 45 = 4/5 of ? = ?

Answer 1

Step-by-step explanation:

$\frac{4}{5} of \: x = 45 \\ \frac{4}{5} \times x = 45 \\ cross \: multiply$

$\frac{4x}{5} = 45 \\ 4x = 45 \times 5 \\ 4x = 225 \\ divide \: both \: sides \: by \: 4$

$\frac{4x}{4} = \frac{225}{4} \\ x = 56.25$