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The time required for a sum of money to ...

The time required for a sum of money to amount to four times iteself at 15% simple interest p.a. will be:(एक धनराशि 15 % प्रतिवर्ष के साधारण बियाज पर किटें समय में स्वम की चार गुना हो जाएगी )

A

20 years

B

30 years

C

10 years

D

15 years

लिखित उत्तर

Verified by Experts

(a) According to the question
Let the Principal(मूलधन)=x
Amount(मिश्रधन)=4x
Interest(बियाज )=4x-x=3x
`SI=(PxxRxxT)/(100)`
`3x=(x xx15xxT)/(100)`
300=15T=T=20years.
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