Question
What is the unit of measurement for the intensity of
sound?Solution
The decibel (dB) is the unit used to measure the intensity of sound, representing a logarithmic scale of sound pressure.
Anjali invested Rs.14000 in a scheme offering compound interest of x% p.a. compounded annually. If at the end of 2 years, interest received by her from ...
A man borrowed Rs 300 and promised to pay back in 11 equal instalments of Rs 30 each. Find the rate of simple interest per annum?
The difference between compound interest and simple interest on a sum of Rs. 20,000 for 2 years at the same rate is Rs. 200. What is the annual rate of ...
- Ramesh deposited Rs. 10,500 at 18% per annum for 2 years and Rs. 7,200 at 22% per annum for 4 years. Calculate the total simple interest he received.
- Meena invests Rs. x in a fund that gives 18% simple interest per year. After 4 years, she earns interest of Rs. ‘1.4x – 800’. What is the value of x?
The difference between compound and simple interest on a sum of money for 2 years at 25% per annum is Rs. 880. The sum is:
A sum of Rs. 3600 is invested at simple interest for 2 years. If the rate interest for first year is 12% p.a. while 20% p.a. for second year, then find ...
Rs. ’P’ invested at a rate of 10% p.a. compound interest (compounded annually) amounts to Rs. 7744 at the end of 2 years. Find the simple interest e...
An equal sum of money is invested in two schemes which offer interest at the same rate but one at simple interest and the other at compound interest (co...
Shivam invested 24000 at 8% p.a. simple interest for ‘x’ months. If at the end of ‘x’ months, he received a total amount of Rs.27200. What is th...
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