Question
A bicycle moves at 30 km/h and needs 9 hours to complete
a journey. A van completes the same journey in 3 hours. If the bicycle's speed is increased by 20% and the van's speed is reduced by 30%, find the new speed difference between the bicycle and van.Solution
ATQ, Distance = 30 × 9 = 270 km Speed of the van = 270 / 3 = 90 km/h Increased speed of the bicycle = 30 × 1.2 = 36 km/h Decreased speed of the van = 90 × 0.7 = 63 km/h Required difference = 63 - 36 = 27 km/hr (van is faster)
A sum of money invested for 2 years at 20% compounded annually and similar money invested for 3 years on simple interest at 10% per annum. If the differ...
The difference between compound interest and simple interest at rate of 20% per annum for 2 years is Rs. 240. Find the simple interest obtained on same ...
A and B started a business with initial investments of Rs. 25000 and Rs. 40000 respectively. After one year, a profit of Rs. 3250 is earned. A being a w...
If the ratio of the sum invested and simple interest received after 1 year is 25:16 respectively, then find the rate of interest.
After how many years, Rs. 4400 will become 5324 at the rate of 10% p.a., compounded annually?
A person lends ₹16,000 to a client at a simple interest rate of 8% per annum. After 30 months, the client repays ₹9,200 and requests an extension fo...
- Rs. 3,300 is put into a savings scheme at a simple interest rate of 36% per annum for 3 years. The maturity amount is then invested in a business venture t...
By investing Rs. 6,000 for 'a' years at an annual compound interest rate of 15%, the interest gained amounted to Rs. 1,935. Determine the simple interes...
A sum of Rs. 3200 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 ...
Rohan deposited Rs. ‘Y’ in a bank offering compound interest of 10% p.a. compounded annually. After 3 years, he invested the amount received from th...
Relevant for Exams:
