Advertisements
Advertisements
प्रश्न
Calculate the amount and the compound interest for the following:
Rs.20, 000 at9°/o p.a. in `2 1/3` years
Advertisements
उत्तर
Here, P = Rs.20, 000; r = 9°/o p.a. ; t = `2 1/3` years
For the first year: t = 1 year
S.I. = `("P" xx "r" xx "t")/100`
S.I. = `("Rs" 20000 xx 9 xx 1)/100`
S.I. = Rs 1800
A=P+S.I.
=Rs (20,000 + 1,800) =Rs 21,800 =new principal
For the second year: t = 1 year; P=Rs 21,800
S.I. = `("P" xx "r" xx "t")/100`
S.I. = `("Rs" 21800 xx 9 xx 1)/100`
S.I. = Rs1, 962
A=P+S.l.
A=Rs (21,800 + 1, 962) = Rs 23, 762 = new principal
For the third year: t = 1/3 year; P=Rs 23,762
S.I. = `("P" xx "r" xx "t")/100`
S.I. = `("Rs" 23762 xx 9 xx 1)/(100 xx 3)`
S.I. = Rs712. 86
A=P+S.I.
A=Rs (23,762 + 712.86) =Rs 24,474.86
C.I. = Interest in first year + interest in second year + interest in third year
C.I. =Rs ( 1,800 + 1, 962 +712.86) =Rs 4,474.86
संबंधित प्रश्न
Mr Kumar borrowed Rs. 15000 for two years. The rates of interest for two successive years are 8% and 10% respectively. If he repays Rs. 6200 at the end of the first year, find the outstanding amount at the end of the second year.
Harijyot deposited Rs 27500 in a deposite scheme paying 12 % p.a. compound interest . If the duration of the deposite is 3 years , calculate :
The amount received by him at the end of three years.
Gayatri invested Rs.25,OOO for 3 years and 6 months in a bank which paid
1O % p.a- compound interest. Calculate the amount to the nearest.Ts-10, that she
received at the end of the period.
Calculate the arnount and the cornpound interest for the following:
Rs 12,500 for 3 years at 12% for the first year, 15% for the second year and 17% for the third year.
Mohan borrowed Rs 25,000 at 10% p.a. compound interest. If he pays back Rs 7,500 every year, find the amount of loan outstanding at the beginning of the fourth year.
Meera borrowed Rs 12,500 on compound interest from Rajeev for 2 years when the rates of interest for successive years were 8% and 10%. If Meera returned Rs 7,500 at the end of the first year, find the amount she has to return at the end of the second year.
Ramesh saves Rs 4,000 every year and invests it at 10% p.a. compound interest. Calculate his savings at the end of the third year.
Neena's savings increases by Rs 1,000 every year. If she saves Rs 4,000 in the first year and invests it at 15% compound interest, find her total savings at the end of the third year.
Calculate the difference between the simple interest and the compound interest on Rs. 4,000 in 2 years at 8% per annum compounded yearly.
6000 workers were employed to construct a river bridge in four years. At the end of first year, 20% workers were retrenched; At the end of second year 5% of the workers at that time were retrenched. However, to complete the project in time, the number of workers was increased by 15% at the end of third year. How many workers were working during the fourth year?
