Question

A book costtwice that of a pen.The pen and the book together cost RS. 48​

Answer 1

Answer:

cost of pen=16/-

cost of book=32/-

Step-by-step explanation:

Let the cost of the pen be x and the cost of book be y.

Then, According to the question,y=2x-----(1)

and

x+y=48-------(2)

Substituting (1) in (2) we get,

x+2x=48

3x=48

x=48/3

x=16

Therefore cost of pen is 16/-.

Now cost of book y=2x (from 1)

so y=2×16=32...