Question 58

A vegetable seller bought 10 dozens of potatoes for ₹120, another 5 dozens for ₹50, and another 5 dozens for ₹30. He sold the potatoes for ₹9 a dozen. How much discount did he overall offer?

Solution

A vegetable seller bought 10 dozens of potatoes for ₹120, another 5 dozens for ₹50, and another 5 dozens for ₹30.

The total cost price of potatoes of (10+5+5) dozens = 120+50+30

20 dozens = 200

the cost price of potatoes of 1 dozens = $$\frac{200}{20}$$

= ₹10

He sold the potatoes for ₹9 a dozen.

discount percentage = $$\frac{\left(10-9\right)}{10}\times100$$

= $$\frac{1}{10}\times100$$

= 10%

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