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Question

If 1 kg of iron is ₹20, then what is the price of 7 kg of iron?

A
₹270
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B
₹14
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C
₹90
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D
₹140
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Solution

The correct option is D ₹140
Price of 1 kg of iron = ₹20
Price of 7 kg of iron = 7 × Price of 1 kg iron
= ₹7 × 20
= ₹140

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