Two equal sum were lent out at 7% and 5% S.I. respectively. The interest earned on the two loans add up to 960 for 4 years. The toal sum lent out is(द
Two equal sum were lent out at 7% and 5% S.I. respectively. The interest earned on the two loans add up to 960 for 4 years. The toal sum lent out is(दो बराबर राशि क्रमश: 7 % और 5 % के साधरण बियाज पर उधार दी गई दोनों ऋणों पर अर्जित बियाज 4 वर्ष में रु 960 जुड़ते है उधार दी गई कुल राशि बताए )
A. 3500
B. 2500
C. 2000
D. 3000
1 Answers
(c ) Let sum=100units
Total interest`=(100xx7xx4)/(100)+(100xx5xx4)/(100)`
28+20=48units
According to the question(तक)=48units=960 `1"units"=(960)/(48)=20`
100units=`20xx100=2000`
Total sum=2000
Alternate (वैकल्पिक विधि)
Total rate of interest he gained (उसे प्राप्त कुल बियाज दर)
`Rightarrow(7+5)=4%`
`Rightarrow` 48%=960(given)
`Rightarrow` =100%=2000