Explanation:
mp=2400
discount=20%
discont amount=d%of mp=20/100×2400=480
sp=mp-discount=2400-480=1920
sp with vat =2208
sp+vat%ofsp=2208
sp(1+vat%)=2208
(1+vat%)=2208/1920
1+vat%=1.15
vat%=1.15-1
vat/100=0.15
vat=0.15×100=15%
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