Question

7 pens and 3 books costs rupees 1110 and 5 pens and 4 books costs rupees 1350. find the cost of one pencil and one book​

Answer 1

Answer:

cost of one pen is 30 rupees and cost of one book is 300 rupees

Step-by-step explanation:

let cost of a pen be denoted by x and cost of a book be denoted by y

so

7x+3y=1110

5x+4y=1350

on solving both equations

x=30

y=300