Question

Find the SP and CP at the profit of 30 percent​

Answer 1

CP (100 + P%)

SP = ------------------

100

To find SP when loss % and CP are given

CP (100 - L%)

SP = ------------------

100

Illustration 1 : Cost price = $450, Profit % = 5% find SP.

Solution :

As profit percent is given, we use the following formula.

CP (100 + P%)

SP = ------------------

100

450 (100 + 5)

SP = ------------------

100

450 x 105

SP = -------------

100

47250

SP = -----------

100

∴ Selling price = $472.50

7500Itisgiventhatthebooksellersold500copiesataprofitof201500

Now, S.P. = C.P. + Profit = 7500 + 1500 = $ 9000

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