Mathematics
Mr. and Mrs. Das were traveling by car from Delhi to Kasauli for a holiday. Distance between Delhi and Kasauli is approximately 350 km (via NH 152D). Due to heavy rain they had to slow down. The average speed of the car was reduced by 20 km/hr and time of the journey increased by 2 hours. Find:
(a) the original speed of the car.
(b) with the reduced speed, the number of hours they took to reach their destination.
Related Questions
A man bought ₹200 shares of a company at 25% premium. If he received a return of 5% on his investment. Find the :
(a) market value
(b) dividend percent declared
(c) number of shares purchased, if annual dividend is ₹1,000.
For the given frequency distribution, find the:
(a) mean, to the nearest whole number
(b) median
x f 10 3 11 2 12 2 13 6 14 3 15 5 16 3 Ms. Sushmita went to a fair and participated in a game. The game consisted of a box having number cards with numbers from 01 to 30. The three prizes were as per the given table:
Prize Number on the card drawn at random is a Wall clock perfect square Water bottle even number which is also a multiple of 3 Purse prime number Find the probability of winning a:
(a) Wall Clock
(b) Water Bottle
(c) Purse