C.I. Formula Applications MCQs : This section focuses on the "C.I. Formula Applications". These Multiple Choice Questions (MCQs) should be practiced to improve the C.I. Formula Applications skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
900 workers were employed to construct a dam in four years. At the end of first year, 5% workers were retrenched. At the end of the second year 2% of the workers were retrenched. To complete the construction in time, the number of workers were increased to 10% at the end of third year. How many workers were working at the end of fourth year.
A. 945
B. 1000
C. 921
D. 989
Question 2
A company increased the production of cars from 15625 in 2002 to 27000 in 2005. Find the annual rate of growth of production of the cars.
A. 15%
B. 2%
C. 10%
D. 20%
Question 3
A new two-wheeler costs Rs. 90000. Its price depreciates at the rate of 10% a year during first two years and the rate of 25% a year thereafter. Find the cost of the two-wheeler after 3 years.
A. 55000
B. 546750
C. 50460
D. 540000
Question 4
An apartment of two floors is constructed at the cost of Rs. 5000000. It is depreciating at the rate of 20% per annum. Find its value 3 years after construction.
A. 2400000
B. 2460000
C. 2500000
D. 2560000
Question 5
Fe-57 decays at the constant rate in such a way that it reduces to 50% in 5568 years. Find the age of an old rod which the iron (Fe) is only 12.5% of the original.
A. 16700
B. 16705
C. 16704
D. 16000
Question 6
If the population of a city has been increasing at the rate of 10%. The present population of the city is 9680000. Find its population 2 years ago.
A. 800000
B. 8000
C. 80000
D. 8000000
Question 7
Manish opened a cafe with an initial investment of Rs. 64000. In the first year he incurred the loss of 10%. During second year he gained the profit of 4% and in the third year he gained the profit of 15%. Calculate his net profit gained in the entire three years.
A. 68889.5
B. 4889.6
C. 68889.61
D. 68889.6
Question 8
Max bought a gadget for Rs. 21000. If the cost of the gadget after 2 years depreciates to Rs. 18162, find the rate of depreciation.
A. 20%
B. 5%
C. 15%
D. 7%
Question 9
The bacteria in a culture grows by 5% in the first hour, decreases by 10% in the second hour and increases by 2% in the third hour. If the original count of the bacteria is 50000, Calculate the count of bacteria at the end of 3 hours.
A. 48000
B. 48195
C. 24097
D. 24095
Question 10
The initial population of a country is 1000000. If the birth rate and the death rate is 10% and 4% respectively, then find the population of the country after 2 years.
A. 1126000
B. 1023600
C. 1123000
D. 1123600
Question 11
The population of a city is increasing at the rate of 10% per annum. Calculate the population of the city on this basis after 3 years if the current population is 10000.
A. 12100
B. 13100
C. 13310
D. 1210
Question 12
The population of a sate decreases every year at the rate 4% per annum. The population of the state 3 years ago was 150000. Find present population.
A. 576000
B. 138240
C. 57600
D. 13824
Question 13
The population of a village was 10000 four years ago. If it had increased by 2%, 2.5%, 3%, 2% in last four years. Find the present population of the village.
A. 267.903
B. 260
C. 266.903
D. 266
Question 14
The population of the town is 30000. The annual birth rate is 5% and the annual death rate is 3%. Calculate the population after 2 years.
A. 61212
B. 612
C. 312
D. 31212
Question 15
The present population of a village is 10000. If it increases at the rate of 2% per annum, find the population after 2 years.
A. 10404
B. 10004
C. 10402
D. 10400
Question 16
The present price of a cycle is Rs 8000. If its value is decreasing every year by 10% then find the price before 3 years.
A. 10977
B. 10976
C. 10975
D. 10974
Question 17
The production of spare parts rose to 25000 from 16000 in 2 years. Find the rate of growth per annum.
A. 25
B. 20
C. 250
D. 200
Question 18
The value of a gadget worth Rs.10000 is depreciating at the rate of 10% per annum. In how many years will its value be reduced to Rs 6561?
A. 5
B. 3
C. 4
D. 2
Question 19
The value of a land increases every year at the rate of 8%. If its value at the end of 3 years be Rs 6000000, find its original value at the beginning of these years.
A. 4762994
B. 3762994
C. 3000000
D. 4000000
Question 20
Two years ago the population of a village was 4000. If the annual increase during the two successive years be at the rate of 2% & 4%, find the present population.
A. 7074
B. 7080
C. 7072
D. 7000
Question 21
Vidhya started a business with initial investment of 500000. She incurred a loss of 2% in the first year and in the second year she gained the profit of 10%. Calculate her net profit earned.
A. 39000
B. 38000
C. 41000
D. 40000