Practice NET Natural Sciences questions with answers and explanations.
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Each year, 90% of the previous value remains.
Thus, 50,000 × 0.9² = Rs. 40,500.
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Compound growth gives 20,000 × 1.05².
The result is 22,050.
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The word 'happily' describes how the children played.
A word that modifies a verb in this way functions as an adverb.
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In this sentence, 'light' names a thing that can be turned off.
Therefore, it functions as a noun rather than a verb or adjective.
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'Under' shows the spatial relationship between the keys and the cushion.
Words that express such relationships are prepositions.
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Doubling means interest equal to the principal is earned in 8 years.
Tripling requires interest equal to twice the principal, so it takes 16 years.
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'But' joins two independent clauses of equal grammatical importance.
It is one of the standard coordinating conjunctions.
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One-year compound amount is principal plus 12% interest.
Thus, 20,000 × 1.12 = Rs. 22,400.
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Profit is shared in the ratio of investments, 3:5.
B receives 5/8 of Rs. 16,000 = Rs. 10,000.
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Capital-time products are 40,000 × 12 and 60,000 × 8.
Both equal 480,000, so the ratio is 1:1.
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A's capital-time is 2 × 6 + 4 × 6 = 36 units.
B's is 3 × 12 = 36 units, so profits are equal.
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A 20% profit gives a selling price of Rs. 960.
Since this is 80% of marked price, marked price = 960/0.8 = Rs. 1,200.
