Radhika's junk shop's rate list is given below: ItemPrice per kgNewspaper₹6Brass₹280Iron₹23Copper₹402Aluminium₹120
What is the price of 17 kg of copper?
A
₹4020
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B
₹6834
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C
₹8000
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D
₹4764
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Solution
The correct option is B ₹6834 Price of 1 kg of copper =₹402 Price of 17 kg of copper =17× Price of 1 kg of copper =17×402 Using box method, 17×402=4000+20+2800+14=6834