Question
The distance between two places P and Q is 550 km. A
car departs from place P for place Q at a speed of 60 km/hr. at 5 am. Another car departs from place Q for place A at a speed of 40 km/hr at 10 am. At what time will both the car meet each other?Solution
Distance travelled by the first car in 5 hours = 60 × 5 = 300 km Remaining distance = 550 - 300 = 250 km Time for both cars to meet = distance/(relative speed ) = 250/(60+40) = 250/100 = 21/2 hrs = 2 hrs 30 min ∴ Both the cars will meet after 2 hrs 30 min means (10 am + 2 hrs 30 min) = 12 hrs 30 min
Riya invests Rs. ‘X’ for 5 years in scheme-A offering simple interest at 12% p.a., while Karan invests the same amount for 3 years in scheme-B offer...
What will be the ratio of simple interest earned on certain amount at the same rate of interest for 3 years and that for 9 years?
Anjali invested Rs.6000 in a scheme offering compound interest of x% p.a. compounded annually. If at the end of 2 years, interest received by her from t...
Ankit deposits a sum of money at an annual compound interest rate of 12%. Over a period of 3 years, the interest accumulated amounts to Rs. 864. If he i...
Atul has Rs.600 with him. He invested 30% of the amount at 5% p.a. for 6 years and rest at 15% p.a. for 4 years. Find the sum of simple interests receiv...
A sum of Rs. 3800 is invested at simple interest for 2 years. If the rate interest for first year is 12% p.a. while 20% p.a. for second year, then find ...
- Karan saved Rs. x in a fixed deposit at 12% simple interest per annum. If the total interest after 5 years amounts to Rs. ‘1.8x – 1000’, determine th...
Maya invested Rs. 5000 in scheme 'E' for 2 years and Rs. 6000 in scheme 'F' for 5 years. Both schemes offer a simple interest rate of 10% per annum. Fin...
Rohit borrowed Rs. 6000 at R% S.I. and Rs. 4000 at (R + 5)% S.I. for 2 years. If the total interest was Rs. 2000, find the rate on Rs. 4000.
The interest received by investing Rs. 4000 for 2 years at compound interest of 20% p.a., compounded annually, was re-invested for 3 years at simple int...
Relevant for Exams:
