Let speed of the boat in still water be ‘3x’ km/h. Speed of the boat in upstream = 3x ÷ 3 = ‘x’ km/h Speed of the stream = 3x – x = ‘2x’ km/h Speed of the boat in downstream = 3x + 2x = ‘5x’ km/h ATQ; (25/50) × 60 = 30 So, 5x = 30 Or, x = 6 So, speed of the boat in still water = 3 × 6 = 18 km/h
A Bank came up with an interesting investment plan under which it would offer 6% interest compounded half-yearly. Mr. 'X' deposited ₹ 80000 once at th...
The compound interest received on investing Rs. 4000 for 2 years at a compound interest of 20% p. a compounded annually is how much percentage more than...
Neena invested Rs.15000 in a fixed deposit scheme for 2 yrs at CI of 9% p.a. How much will Neena get on maturity of the fixed deposit?
The difference between the compound interest and simple interest on a certain sum for 2 years at 12% per annum is 144. Find the principal amount.
A person invested 6,000 in a bank at compound interest compounded annually. After 3 years, the sum became 7,986. What was the rate of interest?
Raj and Simran each invested a sum of ₹10,000 for three years at 25% compound interest per annum. However, while for Raj the interest was compounded a...
A person borrows ₹80,000 at a rate of 10% per annum compound interest. What is the amount after 3 years?
What will be the CI on a sum of Rs.50,000 after 3 years at the rate of 11%p.a?
...What is the compound interest on a sum of Rs 12,000 for 2(5/8) years at 8% p.a., when the interest is compounded annually? (nearest to a rupee)
A certain sum of money amounts to ₹12,600 in 2 years and ₹14,490 in 3 years at compound interest. Find the rate of interest per annum.
