Question

Articles are bought at `Rs.45` per dozen and then sold at a rate of `Rs.85` per score. What is the gain percent?

Answer 1

Gain per cent is `13 1/3%`

Explanation:

As articles are bought at Rs.45 per dozen,

unit buying rate is `45/12=15/4=Rs.3.75`

As they were sold at Rs.85 per score,

unit selling rate is `85/20=Rs.4.25`.

As such there is a gain of `4.25-3.75=Rs.0.50` on each `Rs.3.75`.

and gain per cent is `0.50/3.75xx100=50/375xx100%`

= `(2cancel50)/(cancel15^3cancel375)xx20cancel100%`

= `40/3=13 1/3%`

Answer 2

`13 1/3%`

Explanation:

You need to know that a dozen is `12` and a score is `20`

Find the unit price in each case.

`12` articles cost `Rs45 " "rarr 45/12 = Rs3.75` each

`20` articles sold at `Rs85 " "rarr 85/20 = Rs4.25` each

The amount of gain per article is `Rs4.25 - Rs3.75 = Rs0.50`

The percent gain is: `0.5/3.75 xx 100% = 13 1/3%`