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Question

Radhika's junk shop's rate list is given below:
ItemPrice per kgNewspaper6Brass280Iron23Copper402Aluminium120

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

Price of 17 kg of copper is ₹6834.

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