Question
Ratio of speed of boat in downstream and speed of stream
is 7:5, if speed of current is 5 km/hr, then find distance travelled (in km) upstream in 4 hours.Solution
Let speed of downstream and speed of stream be 7x and 5x respectively. Speed of current => 5x = 5 => x = 1 km/hr Downstream speed = 7 × 1 = 7 km/h Speed of boat = 7 - 1 = 6 km/hr Upstream speed = 6 - 1 = 5 km/h Distance travelled upstream in 4 hr = 4 × 5 = 20 km
A man invested a certain amount of sum at 12.5% per annum simple interest and earned an interest of Rs.2500 after 5 years. If the same amount is investe...
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?
- A principal amount of Rs. 2,000 earns a simple interest of Rs. 375 in 2 years and 6 months. What is the annual rate of interest?
A sum of money amounts to Rs 5400 in 3 years and to Rs 6000 in 5 years at simple interest. Find the principal and the rate of interest per annum.
If the difference between the simple interest and compound interest, compounded annually, received on a principal amount of Rs. 25000 at an interest rat...
A person lent Rs. 40000 at 8% p.a. compound interest, compounded annually for two years. After two years, the total amount earned by the person is again...
A man invested Rs. 's' in scheme 'G' offering simple interest at 8% for 5 years and Rs. 2,200 in scheme 'H' offering simple interest at 9% for 4 years. ...
The difference between compound interest and simple interest on a sum of Rs 8,000 for 2 years at the same rate is Rs 20. Find the rate of interest per a...
At what % of simple interest per annum will Rs. 500 amount to Rs. 610 in five years?
Simple interest earned on an amount of Rs. 2000 at rate of R% per annum after 4 years is Rs. 288. Find the simple interest earned on an amount of Rs. 15...
Relevant for Exams:
