Question

A cake is sold for Rs 368 perka I is the keeper makes a proof 20%Find the cost price
R399
Rs.329
Rs.499
Rs.389

Answer 1

Answer:

Solution:-

Selling price of article =Rs.368

Let the cost price of article be Rs.x.

Now, according to the question,

x−8% of x=368

x−

100

8

×x=368

x−

25

2x

=368

25

25x−2x

=368

25

23x

=368

x=

23

368×25

=400

Therefore the cost price of article is Rs.400.

Let the new selling price of article to gain 10% be Rs.y.

Now to gain 10%,

y=400+10% of 400

⇒y=400+

100

10

400

⇒y=400+40=440

Hence to gain 10%, the article mut be sold for Rs.440.