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Mohan lent some amount of money at 9% si...

Mohan lent some amount of money at 9% simple interest and an equal amount of money at 10% simple interest each ofr two years. If his total interest was Rs.760, what amount was lent each case? (मोहन कुछ धनराशि को 9 % साधारण बियाज दर से तथा उसी के बराबर राशि को 10 % की साधरण बियाज दर से 2 वर्ष के लिए उधार देता है उसे 760 बियाज के रूप में प्राप्त होते है उधार दी गयी प्रत्येक धनराशि क्या होगी:)

A

17

B

1800

C

1900

D

2000

लिखित उत्तर

Verified by Experts

(d) Let the amount invested(माना की निवेश की राशि)=`(Pxx9xx2)/(100)+(Pxx10xx2)/(100)=760`
`(18p+20p)/(100), P=2000`
Alternate /(वैकल्पिक विधि )
Total interest percent (कुल बियाज दर)
= `(9xx2)`% + (10xx2)`%
`rArr` 38%=760
`rArr` 100% = 2000 ltvbrgt Hence required principle = ₹ 2000
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