case study question
Raj Bros 200 words for rupees 24 as he reached his home he found 20 words to be used and sold the remaining was so as to grain 10 % on whole transaction.
(a) what is cost price of 200 bulbs?
(b) what is cost price of 50 bulbs?
(c) how many bulbs remained to be sold?
(d) what is the selling price of remaining bulbs at the given gain percent?
(e) what is the selling price of 1 bulb?