Question

a trader bought the number of articles for 900 rupees 5 articles that damage he sold each of the remaining articles at rupees to more than what he had paid for it and got a trader bought the number of articles for 900 rupees 5 articles that damage he sold each of the remaining articles at rupees to more than what he had paid for it and got a profit of Rs 80 on the whole whole product find the number of article he bought?

Answer 1

Answer:

let the total no of aarticles be n

let the value of one article ne a

given:

        na=900

       a=900/n

(n-5)*(a+2)=980

na-5a+2n=990

900-5(900/n)+2n=990

2n-4500/n=90

n2-2250=45n

n2-45-2250=0

n(n-75)30(n-75)

(n+30)  (n-75)

n=-30  n=75

sine the no of arrticles cannot be in negative

the answer is 75: