Question

10. Rehan buys a book and a pen and pays Rs 50 for both. The book costs Rs 8
more than twice the cost of the pen. Find the cost of the book.​

Answer 1

Answer:

Given Below:

Step-by-step explanation:

Let the book be 'x' and the pen be 'y'

x + y = 50

Cost of the book = 8 + 2y

2 + 2y + y = 50

2 + 3y = 50

3y = 50 -2

3y = 48

y = 16 Rupees

Therefore cost of pen = 16 Rupees

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Answer 2

Answer:

Pen = 14 rupees

Book = 36 rupees

Step-by-step explanation:

let price of pen be 'x'

therefore book price = 2x+8

total cost = 50 rupees

therefore 2x+8+x=50

= 3x + 8 = 50

= 3x = 50-8

= 3x = 42

= x = 42/3

= x = 14

therefore pen costs 14 rupees

and book costs 2x+8

=2(14)+8

=28+8

=36 rupees