हिंदी

To calculate the growth of a bacteria if the rate of growth is known, the formula for calculation of amount in compound interest can be used.

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प्रश्न

To calculate the growth of a bacteria if the rate of growth is known, the formula for calculation of amount in compound interest can be used.

विकल्प

  • True

  • False

MCQ
सत्य या असत्य
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उत्तर

This statement is True.

Explanation:

For calculating the growth of a bacteria for the rate of growth is known, then we can use the formula for calculation of amount in compound interest. where, A = growth after n years, P = initial number of bacteria and R = rate of growth.

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अध्याय 9: Comparing Quantities - Exercise [पृष्ठ २९१]

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एनसीईआरटी एक्झांप्लर Mathematics Exemplar [English] Class 8
अध्याय 9 Comparing Quantities
Exercise | Q 46. | पृष्ठ २९१

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संबंधित प्रश्न

Calculate the amount and compound interest on Rs 10800 for 3 years at `12 1/2` % per annum compounded annually.


Find the compound interest at the rate of 5% for three years on that principal which in three years at the rate of 5% per annum gives Rs 12000 as simple interest.


The cost of a machine depreciated by Rs. 4,000 during the first year and by Rs. 3,600 during the second year. Calculate :

  1. The rate of depreciation.
  2. The original cost of the machine.
  3. Its cost at the end of the third year.

Calculate the compound interest on Rs. 15,000 in 3 years; if the rates of interest for successive years be 6%, 8%, and 10% respectively.


Mohan borrowed Rs. 16,000 for 3 years at 5% per annum compound interest. Calculate the amount that Mohan will pay at the end of 3 years.


A certain sum of money invested for 5 years at 8% p.a. simple interest earns an interest of ₹ 12,000. Find:
(i) the sum of money.
(ii) the compound interest earned by this money in two years and at 10% p.a. compound interest.


The simple interest on a certain sum of money at 4% p.a. for 2 years is Rs1500. What will be the compound interest on the same sum for the same time?


A sum of Rs. 20,000 is borrowed by Heena for 2 years at an interest of 8% compounded annually. Find the Compound Interest (C.I.) and the amount she has to pay at the end of 2 years.

The present value of a machine is ₹ 16800. It depreciates at 25% p.a. Its worth after 2 years is ₹ 9450


Suppose for the principal P, rate R% and time T, the simple interest is S and compound interest is C. Consider the possibilities.

  1. C > S
  2. C = S
  3. C < S

Then


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