Arturo O. answered 01/11/18
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Experienced Physics Teacher for Physics Tutoring
40% markup means the sale price is 1.40 times the cost.
1.40($20) = $28
Hayden K.
asked 01/11/18
Arturo O. answered 01/11/18
Experienced Physics Teacher for Physics Tutoring
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Braxton R.
how did your get 1.4001/17/20