Question

A pile of identical books weigh 80kg. Hind how many books weigh 20kg.

Answer 1

$\huge\boxed{\texttt{\fcolorbox{Red}{aqua}{Hello Friend}}}$

80kg weight = 1 pile of book
20kg weigh =x books

This is a case of direct variation

ATQ,
$\frac{1}{x} = \frac{80}{20} \\ x = \frac{1 \times 20}{80} \\ x = \frac{1}{4}$
$<marquee>Hope it helps you...$

Answer 2

hi mate ..

Answer....

Hope it helps ☺️