Question

if the cost of a pen is half that of a book and both cost rs. 15. the cost of a pen is​

Answer 1

Answer:

5 ...................

Answer 2

Answer:

Cost of Pen = rs. 5

Cost of Book = rs. 10

Step-by-step explanation:

let the price of the pen = x

then there price of the book = 2x

x + 2x = 15

3x = 15

x = 15 / 3 = rs. 5

2x = 5x2 = rs. 10