How much does it cost?

Algebra Level 2

A book costs $ 1 \$1 plus half its price. How much does it cost? Give your answer in $ \$ .

3 2.5 1.5 2

A Former Brilliant Member by A Former Brilliant Member

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1 solution

let x x be cost of the book

then,

x = 1 + 1 2 x x=1+\dfrac{1}{2}x

1 2 x = 1 \dfrac{1}{2}x=1

x = 2 \boxed{x=2} answer \boxed{\color{#20A900}\text{answer}}

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