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एक ही समयावधि में कोई धनराशि 5% के ब्याज...

एक ही समयावधि में कोई धनराशि 5% के ब्याज पर 2200 और 8% के ब्याज पर 2320 हो जाती है। समयावधि क्या है

A

2 साल

B

4 साल

C

5 साल

D

3 साल

लिखित उत्तर

Verified by Experts

The correct Answer is:
A

(a) `P+S.I.=(PxxRxxT)/(100)+P`
`2200=(Pxx5xxT)/(100)+P`
`2200xx100=5PT+100P…(i)`
`2320=(Pxx8xxT)/(100)+P`
`2320=(Pxx8xxT)/(100)+P`
`2320xx100=8PT+100P`
`2320xx100=3PT+5PT+100P….(ii)`
Value of eq. (ii) put in eq(ii) `2320xx100=3PT+2200xx100 3PT=120xx100` PT=4000
Value of PT in eq(i) `2200xx100=5xx4000+100P` 22000-20000=100P`
`P=(20000)/(100)`
P=2000
`200=(200xx5xxT)/(100)`
`T=(200)/(100)=2 years =2000`
`S.I.=(PxxRxxT)/(100)`
`200=(200xx5xxT)/(100)`
`T=(200)/(100)=2years`
Alternate(वैकल्पिक विधि )
`(8-5)%=2320-2200)
3%=120
1%=120 ltbr 1%=40
5%=200
Principal=2200-200`
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