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The cost of 8 packets of salt , each weighing 400 grams,is Rs 36. What will be the cost of 20 packets if each packet weighs 1 kg

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Given that,

Cost of 8 packets weighing 400 grams= Rs. 36

Cost of 20 packets each weighing 1 kg = ?

We know,

1 kg= 1000 grams

So,

36/2 = Rs. 18

∴every 200 grams costs Rs. 18

Now,

200/5 = 5

Rs. 18 X 5 = Rs. 80

∴