Advertisements
Advertisements
प्रश्न
The population of a city is 1,25,000. If the annual birth rate and death rate are 5.5% and 3.5% respectively. Calculate the population of the city after 3 years.
Advertisements
उत्तर
Here net growth = (5.5 - 3.5)% = 2%
P = ₹ 1,25,000
n = 3 years
∴ Population of the city after 3 years
= 1,25,000 `(1 + 2/100)^3`
= 1,25,000 `((102)/(100))^3`
= 1,25,000 x `(102 xx 102 xx 102)/(100 xx 100 xx 100)`
= 1,32,651.
संबंधित प्रश्न
Shekhar had a fixed deposit of Rs 24000 for 3 years . If he received interest at 10% p.a compounded annually, find the amount received by him at the time of maturity.
Prashant borrowe Rs. 35000 at 12% p.a. compounded semi-annually. Find the amount he needs to pay back at the end of `1 1/2` years
Amita wanted to start a business for which she needed Rs, 40000. She borrowed this from Dolly at 10% p.a compounded semi-annually. Find the extra amount that she needs to pay at the end of two years to clear her debt.
What sum of money will amount to Rs 13,675.20 in 3 years at compound interest, if the rates of interest are 10%, 11% and 12% for the successive years?
The interests on two successive years for a sum invested at compound interest compounded annually are Rs 840 and Rs 940.80. Calculate the rate of interest and the sum invested.
The cost of a machine dep reciated by Rs 2592 during the third year and by Rs 2332.80 during the fourth year. Calculate :
The cost at the end of the fourth year.
What sum of money will amount to Rs 15,746.40 at 16% p.a. compounded half-yearly?
On what sum of money will the compound interest for 2 years at 8% per annum amount to Rs 1399.68?
In what time will Rs 8,000 amount to Rs 12,167 at 15% per annum compounded annually?
The compound interest on a certain sum of money at 10% p.a. for 3 years is Rs 4,965. What will be the simple interest on the same sum for 3 years at 11% p.a.?
