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A sum of money becomes (7)/(6) itself in...

A sum of money becomes `(7)/(6)` itself in 3 years at a certain rate of simple interest. The rate of interest per annum is:(कोई राशि साधारण बियाज की किसी वार्षिक दर से 3 वर्षो में स्वयं `(7)/(6)` की गुना की होती है बियाज की वार्षिक दर बताय)

A

`5(5)/(9)%`

B

`6(5)/(9)%`

C

0.18

D

0.25

लिखित उत्तर

Verified by Experts

(a) Let the principle (माना की मूलधन)=6P,
Hence Amont(मिश्रनघन)=`6Pxx(7)/(6)=7P`
`therefore SP=7P-6P=P`
`SI=(PxxRxxT)/(100)`
`Rightarrrow P=(PxxRxxT)/(100)`
`Rightarrow R=(100)/(8)=(50)/(9)=5(5)/(9)%`
Alternate(वैकल्पिक विधि)
In such type of questions to save your valuable time try to think like that(इस प्रकार के प्रशनो में नीचे गयी विधि के अनुसार सोचने का प्रयास करे).

Required Rate%= `(1)/(6)xx(100)/(3)=5(5)/(9)%`
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