Question
Average speed of ‘A’ during a 24-hour journey is 36
km/h. If he covered the first 160 km of his journey at a speed of 20 km/h, then find the speed at which ‘A’ travelled during the remaining journey.Solution
Total distance covered by ‘A’ = 24 × 36 = 864 km Time taken to cover 160 km = 160/20 = 8 hours Time taken to cover remaining distance = 24 – 8 = 16 hours So, required speed = {(864 – 160)/16} = 44 km/h
An amount of Rs. ‘y’ was invested on (R-2)% per annum on simple interest and at the end of 6 years an amount of Rs. 23100 was obtained as an interes...
Simple interest on a sum at 8% p.a. for 3 years is ₹1920. Find the principal and amount.
A borrowed Rs. 9500 from B for his business. How much amount A will return to B at the end of 36 months such that the sum was borrowed at simple interes...
Rs. 5,500 is invested in scheme ‘A’ offering simple interest of 15% p.a. and Rs. 8,000 in scheme ‘B’ offering simple interest of 5% p.a. What is...
The simple interest received on a certain sum is Rs. 250 less than the sum invested. If the sum was invested at 15% p.a. for 4 years, then find the simp...
An amount of Rs. 2400 is invested at an annual compound interest rate of 20%, while another amount of Rs. 1600 is invested simultaneously at an annual s...
A sum of Rs. 2800 is invested at simple interest for 2 years. If the rate interest for first year is 10% p.a. while 18% p.a. for second year, then find ...
Akshay invested Rs. 2240 in two schemes P and Q in the respective ratio of 9:7. Scheme P and Q are offering simple interest at the rate of 10% per annum...
A man invested a certain amount of sum at 11% per annum simple interest and earned an interest of Rs. 2200 after 2 years. If the same amount is i...
- Hitesh divided Rs. 20,100 into two portions. He invested the first portion at 6% simple interest per annum for 5 years, and the second portion at 20% simpl...
Relevant for Exams:
