Answer :
A = 30 x 129 / 100 = $38.7 129 - 38.7 = $90.3
B= 35 x 135 / 100 = $47.25 135 - 47.25 = $ 87.75
C= 40 x 150 / 100 = $60. 150 - 60 = $90
Store B would be the cheapest
A = 30 x 129 / 100 = $38.7 129 - 38.7 = $90.3
B= 35 x 135 / 100 = $47.25 135 - 47.25 = $ 87.75
C= 40 x 150 / 100 = $60. 150 - 60 = $90
Store B would be the cheapest