Question

the cost of dozen pencil is 30 rupees then what will be the cost of pencils per score

Answer 1

Cost of a dozen pencil=30

Cost of one pencil=30/12
=5/2=2.5 rupees

Answer 2

Given - Cost of dozen pencils

Find - Cost of pencils per score

Solution - As per the known facts, one score has 20 pencils and one dozen has 12 pencils.

Cost price of 12 pencils = 30

Cost price of 1 pencil = $\frac{30}{12}$

Performing division

Cost price of 1 pencil = 2.5

Cost price of 20 pencils = 20*2.5

Performing multiplication

Cost price of 20 pencils = 50

Hence, the cost price per score is Rupees 50.