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प्रश्न
Find the single discount (as a percent) equivalent to successive discounts of:
60% and 80%
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उत्तर
Successive discounts = 60% and 80%
Let M.P. = ₹100
∴ S.P. after two discounts,
`=₹(100(100-60)xx(100-80))/(100xx100)`
`=₹(100xx40xx20)/(100xx100)=₹8`
∴ Total discount = ₹100 − 8 = ₹92
∴ Single discount = 92%
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