Question

1.
2.
3.
4.
Answer (Detailed Solution Below)

Option 3 : ₹$7,400$ / ₹$7,400$

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Detailed Solution

सही उत्तर ₹$7,400$ / ₹$7,400$ है।

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Question:

A sum of ₹$5,000$ amounts to ₹$7,000$ in $4$ years at simple interest. If the rate of interest is increased by $2$ percentage points, what will the amount be after the same period? / ₹$5,000$ की धनराशि साधारण ब्याज पर $4$ वर्षों में ₹$7,000$ हो जाती है। यदि ब्याज की दर $2$ प्रतिशत अंक बढ़ा दी जाए, तो उतनी ही अवधि के बाद मिश्रधन कितना होगा?

1.
₹$7,200$ / ₹$7,200$
2.
₹$7,800$ / ₹$7,800$
3.
₹$7,400$ / ₹$7,400$
4.
₹$8,000$ / ₹$8,000$

Correct Answer: ₹$7,400$ / ₹$7,400$

SI $= 7000 - 5000 = 2000 = \frac{5000 \times r \times 4}{100} \Rightarrow r = 10\%$. New rate $= 12\%$: SI $= \frac{5000 \times 12 \times 4}{100} = 2400$. Amount $= 5000 + 2400 =$ ₹$7,400$. / साधारण ब्याज $= 7000 - 5000 = 2000 = \frac{5000 \times r \times 4}{100} \Rightarrow r = 10\%$। नई दर $= 12\%$: ब्याज $= \frac{5000 \times 12 \times 4}{100} = 2400$। मिश्रधन $= 5000 + 2400 =$ ₹$7,400$।

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