Expert: Josh - 1/17/2010

Question
QUESTION: a shopkeeper bought 150kg of sugar at Rs 18 per kg.he spent Rs75 for transportation and made a profit of Rs225 by selling the sugar find the selling price of the sugar per kg?

ANSWER: Hello Shiny,

The cost of buying the sugar = 150 [kg] * 18 [Rs/kg] = 2700 [Rs].
The cost of transportation = 75 [Rs].

Add these two components to get total cost. Let this be C.

The profit made = 225 [Rs].

Therefore, money made from selling the sugar M = C+225. Remember, the value of C has already been determined.

Dividing M by 150 (i.e., the weight of sugar) gives the selling price of the sugar per kg.

Regards.



---------- FOLLOW-UP ----------

QUESTION: 1. by selling a watch at rs 968.30,robinsuffered a loss of rs 64.if he had spent rs 25 on its repair,how much did he buy the watch?
2.500kg of rice was sold at rs 26.50 per kg. the shopkeeper made a profit of rs 1250 at what price per kg did he buy the rice?
3.c.p= rs 9356,overhead charges=rs 225,s.p= rs 10000
4.anju bought an old transistor ,spent rs 50 on its repair and sold it for rs 359 at a loss of rs 35 . at what price  per kg did he buy the rice?

Answer
Since you did not show any working, I do not know if you have actually attempted, or even thought about the questions. I do not know if you are simply relying on others to do your home work questions, OR you have picked and asked specific questions you have genuine difficulties with.

Q1. Look at it this way
   o Expenditure:= Purchase Price + Cost of Repair
         [Note: Cost of Repair represents out of pocket expense]
   o Income:=  Sell Price
   
   Loss = Expenditure - Income
        =(Purchase_Price + Cost_of_Repair) - Sell_Price       .....[#1]
Task:
  Given: Loss=64, Cost_of_Repair=25, Sell_Price=968.3.
  Find the unknown "Purchase_Price".

Rearrange equation [#1] to get
   Purchase_Price = Sell_Price + Loss - Cost_of_Repair
         = 968.3 +64 -25

Q2. Calculate unit cost last.
   First, find total cost of rice purchased.
   
Total Cost(purchase) = Total Cost(sales) - Total Profit
         = 26.5 [Rs/kg] * 500 [kg] - 1250
         = ...
Now, determine profit per kg of rice sold from this figure. Divide "Total Cost(purchase)" by volume sold.

Q3. Unclear what you are meant to find.

Q4. Use same idea as in Q1.