Question
First, a number is increased by 52%, and then it is
decreased by 45%. Determine the net percentage increase or decrease.Solution
ATQ,
Let the number be 100b
Final number = 1.52 × 0.55 × 100b = 83.6b
Net percentage change = [(83.6b - 100b) ÷ 100b] × 100 = -16.4% or
16.4% decrease
An amount of Rs. 7200 is invested at 30% p.a. simple interest for 5 years. The interest gained is then deposited at 10% p.a. compound interest for 2 yea...
- A certain sum of money amounts to ₹3360 at a rate of R% per annum under simple interest after 5 years, and to ₹3480 at a rate of 15% per annum under si...
If an amount of Rs. 'x' is deposited at a simple interest rate of 10% per annum for a duration of 3 years, and it accrues an interest of Rs. 600 during ...
A certain sum of money invested at R% p.a. fetches a compound interest (compounded annually) of 1400 and simple interest of Rs.1250 at the end of 2 year...
A man invested Rs. 16,000 at simple interest of 'x%' p.a. and received Rs. 32,000 after 2 years. If he had invested Rs. 21,000 at simple interest of 'x%...
What is the total amount received from an investment of Rs. 8,000 for a period of 18 months, if the compound interest is calculated at 18% per annum and...
- Rajesh invests a certain amount at an annual simple interest rate of 8% for 3 years. The total amount he receives after this period is then reinvested at a...
A certain sum of money invested at a rate of 24% p.a. amounts to Rs. 19965 at the end of 15 months if the rate of interest is compounded 5 monthly. Find...
Suresh earned an interest of Rs. 1677 on principal amount of Rs. 5200 at some rate of compound interest in 2 years. How much more/less interest would he...
Atul has Rs.350 with him. He invested 20% of the amount at 5% p.a. for 8 years and rest at 10% p.a. for 5 years. Find the sum of simple interests receiv...
