Question

the price of a book and the pen together is rupees 19. if the price of a book is rupees 5 more than that of a pen, find the price of a pen. What is the price of a book ?

Answer 1

Answer:

Think conceptually first:—

The pen price is ‘x’ rupees and the book price is “x + 4” rupees, totalling 20 rupees.

Rewrite that in mathematical format:—

x + (x + 4) = 20

Solve for ‘x’:—

x + (x + 4) = 20

2x + 4 = 20

2x = 20 – 4

2x = 16

x = 16 / 2 = 8 (the pen cost 8 rupees)

Therefore 1 more pen bought would make the new total 28 rupees.

Answer 2

Step-by-step explanation:

take the price of the pen be X rupees