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2 July, 20:53

James went shopping for a new watch. The original price was $150. It was marked down to $110. What is the percent of decrease?

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  1. 2 July, 21:20
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    26.7% is the percent of decrease

    Step-by-step explanation:

    $150=100% price (starting og price)

    110 = ? or x (discounted price)

    We need to find what is the decrease from 150 to 110 in percentage

    Use ratios to solve:

    $150:100%

    $110:x (unknown)

    Cross multiply to find x

    150 times x = 150x, and 100x110 = 11000

    = 150x=11000

    Lets get x all by itself to fully solve. We have to divide to get x by itself:

    = 150x/150=11000/150 (divide 150 both sides always)

    = 73.3,

    Now we subtract 73.3 from 100 to get the decrease percentage

    100-73.3=26.7 which is the percent of decrease
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