### A boy buys a biscuit for #4 and sells at a profit of 20%. Find...

A boy buys a biscuit for #4 and sells at a profit of 20%. Find the actual price and the selling price?

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Cost price of biscuit(C.P.)= #4
%Profit= 20%
Selling price of the biscuit(S.P.)= ?

%Profit= (S.P. - C.P.)/C.P. × 100/1
20= (S.P. - 4)/4 × 100/1
multiply both side by 4

80= 100(S.P. - 4)
80= 100S.P. - 400
480= 100S.P.
S.P.= 4.8

The actual price is #4 and the selling price is #4.8
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The cost is what he paid, N4.
The selling price is:
100% cost + 20% profit = 120%
1.2 x N4=N4.8
ANSWER: The selling price at 20% profit is N4.8
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Cost price of biscuit(C.P.)= #4
%Profit= 20%
Selling price of the biscuit(S.P.)= ?

%Profit= (S.P. - C.P.)/C.P. × 100/1
20= (S.P. - 4)/4 × 100/1
80= 100(S.P. - 4)
80= 100S.P. - 400
480= 100S.P.
S.P.= 4.8

The actual price remains #4 and the selling price is #4.8.
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