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3 September, 20:35

You paid $600 for a new guitar. Your guitar costs $40 more than twice the cost of your friend's guitar. How much did your friend's guitar cost?

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  1. 3 September, 20:44
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    Cost of your guitar = $ 600

    Let your friend's guitar's cost be = n

    According to the question =

    Your guitar costs $ 40 more than twice the cost of your friend's guitar which is n, but your guitar's cost is $ 600.

    So, the linear equation for this will be =

    = 2n+$40 = $600

    = 2n = $600-$40

    = 2n = $ 560

    = n = $ 560/2

    = n = $ 280

    Thus, the cost of your friend's guitar is $ 280.
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