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Question

Answer

Let u = discounted amount

Blue : 10% –> u => 100% = 10u

Red:   40% –> u => 100% = 2.5u

Blue   [u][———-9u————]    where 9u = discounted price

Red    [u][1.5u]                                    where 1.5u = discounted price

9u + 1.5u -4 = 9u + 13.40

1.5u = 17.40

u = 11.60

Hence the discount for the red shirt(=blue shirt) is $11.60

Please click “Accept Answer” if it is correct.

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