Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

a shopkeeper buys a number of books for rs 800 .if he had bought 4 more books for the same amount each book would ave cost him 10 rs less.how many books did he buy?

a shopkeeper buys a number of books for rs 800 .if he had bought 4 more books for the same amount each book would ave cost him 10 rs less.how many books did he buy?

Grade:12

1 Answers

Sharan
20 Points
6 years ago
let cost of each book=x
let no of books bought be = y
Therefore according to question,,
xy=800.................(1)
and,   (x-10)(y+4)=800..............(2)
xy+4x-10y-40=800
800+4x-10y-40=800
4x-10y-40=0.............(3)
Now using (1)&(3) a quadratic equation will form and solve it for x&y
 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free