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प्रश्न
| Dinu's Rate-List | |
| Kind of Junk | Price of 1 Kg |
| 1. Newspaper... | Rs. 6/- |
| 2. Iron... | Rs. 14/- |
| 3. Brass... | Rs. 180/- |
| 4. Plastic... | Rs. 12/- |
| 5. Water paper... | Rs. 4.50/- |
Kiran buys 1 kg iron for Rs 12 but sells it for Rs 14. How much does she earn when she sells 32 kg iron?
उत्तर
Kiran earns by selling 1 kg of iron = Rs 14 - Rs 12 = Rs 2
So, she will earn by selling 32 kg of iron = Rs 2 × 32 = Rs 64
This can be calculated as follows also.
| 30 | 2 | |
| 2 | 30 × 2 | 2 × 2 |
| 60 | 4 |
You will get the desired result by adding the numbers in the last row.
Which will be equal to 60 + 4 = 64
Hence, Kiran earns Rs 64 by selling 32 kg of iron.
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| Kind of Junk | Price of 1 Kg |
| 1. Newspaper... | Rs. 6/- |
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| 3. Brass... | Rs. 180/- |
| 4. Plastic... | Rs. 12/- |
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