Question

Find single discount equivalent to a discount series of 10%,20% and 25%

Answer 1

let the m.p. be rs100.
first discount =rs 10
net price after first discount=100-10=90
second discount = 20%of 90=20/100×90=18
net price after second discount =90-18=72
third discount=25%of 72=18
net price after third discount =72-18=54
:tota discount allowed=100-54=46
hence the required single discont=46%
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