Question

A sold his bike to b at a profit of 20%. b sold the bike at a loss of 20% to

c. if c sold the bike for rs 3300 which earned him a profit of 10% then find the rate at which a purchased the bike?

Answer 1

when "c" sold the bike sp =3300 and profit=10%

so cp= 100/110*3300=3000

so cp of c =3000

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when "b"sold the bike sp=3000 and loss=20%

so cp=100/80*3000=3750


so cp of b = 3750

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when "a" sold the bike sp=3750 and profit=20%

so cp =100/120*3750=3125


hence , rate of "a" purchased bike =3125
so cp of a = 3125

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note- sp = selling price and cp=cost price