Question

Soni type $630$ words in $1$ hour. How many words would she type in $40$ minutes ?

Answer 1

number of words in $1$ hour $=630$

let number of words in $40min=x$

$\frac{630}{60}=\frac{x}{40}=$ words per minute.

$x=\frac{40}{60}\times 630$

$x=420$ words