A pen and a book

Algebra Level 1

A pen and a book cost $1.10.
If the book costs $1 more than the pen.
What is the price of the book?

$1.05 $1 $1.5 $0.10

Akshay Sreenivasan by Akshay Sreenivasan , 23, India

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2 solutions

Let the price of the pen be x.

Price of the book is x+1.

x+x+1=1.10

2x+1=1.10

2x=0.10

x=0.05

Price of the book = x+1 = 0.05+1 = $1.05

2 Helpful 0 Interesting 0 Brilliant 0 Confused

P + B = 1.10 P+B=1.10 ( 1 ) (1)

B = 1 + P B=1+P ( 2 ) (2)

Solving the system of equations, we get B = 1.05 B=\boxed{1.05}

0 Helpful 0 Interesting 0 Brilliant 0 Confused

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