A dishonest shopkeeper uses 990 g weight instead of 1 kg. Neha went to the shopkeeper and asked him to give 5/2 kg sugar. Fraction of sugar he cheated of is 1/100. If true then enter 1 and if false then enter 0.

Sub Grade: 9

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Enter 1

Enter 0

Nothing

All of these

answer is A.

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Detailed Solution

The weight of sugar given less is directly purportional to weight of sugar.
For 1 kg sugar, 10 g of sugar is less.
Let us assume a grams be sugar less for 5/2 kg
⇒1 :5/2 = 10 : a
Then by applying product of extremex = product of mean
⇒ 1 xa =5/2x10
⇒ a =25 grams or 1/40 kg
Then cheated fraction of sugar will be
⇒ 1/40 -1/100
5/2
Then enters.
Hence, option 1 is correct.

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