Question

A man purchases 3 television sets of 7500 each and sold them at average price of 7800.The first was sold at 8% profit and second was sold at 5% loss.find the gain on third television.​

Answer 1

Answer:

9%

Step-by-step explanation:

(explanation applicable only when cost prices are same)

average profit = $\frac{average selling price - average cost price}{average cost price}$ x 100

= $\frac{7800 - 7500}{7500}$ x 100

= = $\frac{300}{7500}$ x 100

= $\frac{300}{75}$

= 4%

profit% required for 3 Television sets = 3 x 4% = 12%

12% = gain% on TV-1 - loss% on TV-2 + gain% on TV-3

12% = 8% - 5% + gain% on TV-3

12% = 3% + gain% on TV-3

gain% on TV-3 = 12% - 3% = 9%

Answer 2

Answer:

9

Step-by-step explanation:

the man 3 tv buy total price: 22500

sold them at everage price of 7800 so total sold them price 23400

first tv 8% profit,his profit price is 600

second tv 5% loss,his losses price is 375

gain on third tv is :

(7500× x)÷100=(7800×3)-{(7500+600)+(7500-375)+7500}

(7500× x)÷100=675

x=(67500÷7500)

x=9