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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. साधारण ब्याज की दर से, रु. 600 की राशि 4 साल की अवधि में रु.720 हो जाती है।यदि ब्याज की दर 2% बढ़ जाती है तो राशि कितनी होगी?

A

Rs. 768
768 रु.
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B

Rs. 794
794रु.
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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.
Method 1:
Here, S.I=720600=120
Also, S.I=PTR100
Thus, 120=600× R× 4100
Solving, R=5%
Now, increasing the interest rate by
2%, New R=7%
Amount =P+S.I=600+600× 7× 4100
=Rs.768

विधि 1:
यहाँ, S.I=720600=120
साथ ही, S.I=PTR100
इसलिए, 120=600× R× 4100
हल करने पर, R=5%
अब, ब्याज दर में 2% की वृद्धि करने पर, नया R=7%
मूलधन =P+S.I=600+600× 7× 4100
=Rs.768

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