Question

A trader bought a number of articles for rs 900 five articles were found damaged

Answer 1

Answer:

let the total no of articles be n

the value of one article be a

given:

       na=900

       a=900/n

Step-by-step explanation:

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

na-5a+2n=990

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

2n-4500/n=90

n-2250/n=45

n2-45n-2250=0

n2-75n+30n-2250=0

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

(n+30)(n-75)

n=-30   n=75

since the no of articles cannot be in negative

therefore the no of articles is 75