Answer the following : ( 4 X 2= 8)
Arun deposited 20000 rupees in a bank which pays 6 % interest compounded annually. how much would he get back after 3 years?
A person goes shopping and spends 75% of his money. If he is now left with Rs. 600, find out how much he had in the beginning.
What is the smallest number by which 2916 should be divided so that the quotient is a perfect cube?
Find the smallest whole number by which 1008 should be multiplied to get a perfect square number. Also, find the square root of the square number so obtained.
Answers
Answer:
What would you like to ask?
8th
Maths
Comparing Quantities
Compound Interest
Rs. 20,000 is deposited at ...
MATHS
Rs. 20,000 is deposited at 6% compound interest in a bank. If the interest is calculated semi-annually find the amount and compound interest for 1
2
1
years.
MEDIUM
Share
Study later
ANSWER
We are given P = Rs. 20,000, R = 6% and n = 1
2
1
years. Here the interest is to be calculated semi annually. Hence 2n = 3. We have the formula to calculate the amount semi annually. Using this formula, we can find the amount directly;
A=P(1+
2×100
R
)
2n
=20000(1+
2×100
6
)
3
=20000(1+
100
3
)
3
=20,000(1.3)
3
≈21,854.54
Here ≈ denotes approximate value. Finally compound interest is given by
C.I.=A−P=Rs.21,854.54−Rs.20,000=Rs.1,854.54≈Rs.1,855.
HOPE IT HELPS YOU BRO