Question

3. A man sells 12 articles for 180 gaining
33%. Find the number of articles bought
by the man for 90.
3
1​

Answer 1

Step-by-step explanation:

Given, S.P of 12 articles =Rs.80

And for these 80 articles, Profit =33

3

1

=

3

100

%

So, Profit % =

C.P.

S.P.−C.P.

×100=

3

100

⇒

C.P

80−C.P

×100=

3

100

⇒80−C.P.=

3

C.P.

⇒

3

4

C.P.=80

C.P.=60

Hence, cost of 12 articles =Rs60

And cost of 1 article =Rs.

12

60

=Rs5

So, number of articles bought for Rs.90=

5

90

=18