Question

9. By selling 180 oranges, a man lost the S.P. of 20 oranges. Find his
purchased them for 270? What would have been the S.P. of one orange?
10. By selling 17 chairs, Rana lost the S.P. of 3 chairs. Find his loss per cent. Had he purchased
them for 7 3400, what would have been the S.P. of one chair?​

Answer 1

Answer:

Now CP of 80 oranges = 80 Rs………..(1)

And we know that

Profit= SP (selling price) - CP (cost price)

Here;

Profit = SP of 80 oranges - CP of 80 oranges…….(2)

{Here profit is already given that is CP of 20 oranges }

By (2);

CP of 20 oranges = SP of 80 oranges - CP of 80 oranges

Or

CP of 100 oranges = SP of 80 oranges

Or

SP of 80 oranges = 100 Rs…………(3)

{ cp of 1 orange is 1 Rs.}

Here we have

CP = 80 rs.

SP = 100 rs.

% profit = (SP - CP)*100/CP

% profit = (100–80)*100/80 = 20*100/80 = 25%