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Question

Q. With simple interest, a sum of Rs. 600 amounts to Rs. 720 in a time span of 4 years. What will it amount to if the rate of interest is increased by 2%?

Q. 600 रुपए की एक राशि साधारण ब्याज के साथ 4 साल की अवधि में 720 रुपए हो जाती है। यदि ब्याज की दर 2% बढ़ा दी जाए तो यह राशि कितनी हो जाएगी?


A

Rs. 768
768 रु.
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B

Rs. 794
794 रु.
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C

Rs. 818
818 रु.
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D

Rs. 865
865 रु.
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Solution

The correct option is A
Rs. 768
768 रु.

Here, S.I=720600=120

Also, S.I=PRT100

Thus, 120=(600×R×4)100

Solving, R=5%

Now, increasing the interest rate by 2%, New R=7%

Amount =P+S.I=600+(600×7×4)100

= Rs. 768


यहाँ, S.I=720600=120

साथ ही, S.I=PRT100

इस प्रकार, 120=(600×R×4)100

हल करने पर, R=5%

अब, ब्याज दर में 2% की वृद्धि करने पर, नया R=7%

राशि =P+S.I=600+(600×7×4)100

= रु. 768


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