The average price of three items of furniture is Rs. 15000. If their prices are in the ratio 3:5:7, the price of the cheapest item is:

  • Option 1)

    R9000             

  • Option 2)

     R15000                 

  • Option 3)

      R16000   

  • Option 4)

     R21000

  • Option 5)

      R18000       

Answers (1)

Average price = Rs. 15000
Sum of prices = 15000*3=45000
Ratio = 3 : 5 : 7
Cheapest Item price =\left \{ \frac{3}{\left ( 3+5+7 \right )} \right \}*45000= \left ( \frac{3}{15} \right )\ast 45000= 9000
                                    = \left ( \frac{3}{15} \right )*45000 = 9000

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