Question
Find total surface area of a cylinder of radius 7 cm and
height 10 cm. (Ï€ = 22/7)Solution
ATQ, TSA = 2πr(r+h) = 2×(22/7)×7×(7+10) = 44×17 = 748 cm²
Rahul deposits a sum of money at an annual compound interest rate of 15%. After 1 year, the interest accumulated amounts to Rs. 180. If he increases his...
In what time will Rs. 21000 amount to Rs. 27951 @ 10% compound interest?
The interest earned on investing Rs. 9000 for 2 years at the rate of 10% p.a., compounded annually, is used to purchase an article. If the article is la...
A sum of money invested for 2 years at 20% compounded annually and similar money invested for 3 years on simple interest at 10% per annum. If the differ...
Rs. 9,000 is invested in scheme ‘A’ offering simple interest of 20% p.a. and Rs. 6,500 in scheme ‘B’ offering simple interest of 8% p.a. What is...
John invested Rs. (P-4000) and Rs. (P+5000) in scheme A and scheme B respectively. The rate of interest in scheme A and B is (R+1)% and (R-1)% respectiv...
- Rohit invests Rs. 7,500 on compound interest at 10% p.a. (compounded annually) for 2 years and Rs. 6,400 on simple interest at 12% p.a. for 4 years. Find t...
Tina invested Rs. ‘x’ at 14% p.a. simple interest and Tanu invested Rs. (x + 700) at 11% p.a. If the total interest after 1 year is Rs. 615, find th...
Raman paid Rs.9,600 in interest on a loan she obtained 5 years ago with a simple interest rate of 16%. What was the amount of the loan she had taken?
At what annual compound interest rate will a principal amount of Rs. 16,000 grow to Rs. 25,000 in 2 years?
Relevant for Exams:
