Question

If 24 ball pens rs 56 find the cost of 18 such pens

Answer 1

Cost of 24 pens= 56rs
Cost of 1 pen. =
$\frac{56}{24} rs$

=>Cost of 18 pens=
$\frac{56}{24} \times 18$
$= 42rs$

Answer 2

Cost of 24balls= 56

Cost of 1 ball = 56/24

Cost of 18 balls= cost of one ball ×18

56/24×18 =rs 42.