Question

oranges were bought at rs.8.50 per dozen and the transport cost were rs.0.50 per dozen. at what price per hundred must these be sold so as to gain 12 percent

Answer 1

total cost of orange= 8.50+0.50=9.00per dozen
or cost of 1 orange =9\12=3\4
 C.P of 100 orange = 3\4×100 =75rupee

12% 0f  75= 75×12\100=9 rupee
  then S.P = 75+9=84 rupee 

Answer 2

Answer:

Cost Rs.84 must be sold so as to gain 12 percent.

Step-by-step explanation:

Given : Oranges were bought at rs.8.50 per dozen and the transport cost were rs.0.50 per dozen.

To find : At what price per hundred must these be sold so as to gain 12 percent?

Solution :

Total cost of orange= 8.50+0.50= 9.00 per dozen

Cost of 1 orange is

$C=\frac{9}{12}=\frac{3}{4}$

C.P of 100 orange is

$C=\frac{3}{4}\times 100$

$C=3\times 25$

$C=Rs.75$

Now, Gain%=12%

SP=12% of 75 is

$SP=\frac{12}{100}\times 75$

$SP=3\times 3$

$SP=9$

Total SP= 75+9=Rs.84

Therefore, Cost Rs.84 must be sold so as to gain 12 percent.