Ramesh bought a number of articles for Rs. 720. If the price of each article was reduced by Rs.2 he would have got 5 more article. Taking the no. of articles x form an equation in x and solve it.
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Answer:
no of articles = 40
Step-by-step explanation:
No. of articles=x
price per article=y
xy=720
If the price of each article was reduced by Rs.2 he would have got 5 more article.
(x+5)(y-2)=720
xy-2x+5y-10=720
720-2x+5xy/x-10-720=0
-2x+5*720/x-10=0
-2x²+3600-10x=0
x²+5x-1800=0
x²+45x-40x-1800=0
x(x+45)-40(x+45)=0
(x+45)(x-40)=0
x can not be negative so x=40
so no of articles = 40
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