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30% (Jane)
100-30=70% (remaining)
40/100 x 70= 28% (Ken)
100-30-28=42% (Leon)
30%= $36
1%= 36/30
= $1.20
100%= 1.20x100
= $120 (125%) after the increase
a) 120/125 x 100 = $96 ( original price)
b) 42/100 x 120 =$50.40 (Leon paid)
100-30=70% (remaining)
40/100 x 70= 28% (Ken)
100-30-28=42% (Leon)
30%= $36
1%= 36/30
= $1.20
100%= 1.20x100
= $120 (125%) after the increase
a) 120/125 x 100 = $96 ( original price)
b) 42/100 x 120 =$50.40 (Leon paid)