A more powerful engine can do more work in less time. For example, an aeroplane covers a greater distance in less time than a car, so an aeroplane is more powerful than a car. Which of the following is an example of this?
Ankur's present age is 5 years less than twice that of his cousin Hanit. Ten years from now, Ankur's age will be 150% of Hanit 's age. What is Ankur's present age (in years)?
From a vegetable vendor 10 women bought okra, 20 bought onions, 15 bought bitter gourd. 2 bought all three vegetables, and 5 bought at least two of these vegetables. How many bought at least one vegetable?
Raveena and Suniti have a total of Rs. 127, Suniti and Avinash have Rs. 153, while Avinash and Raveena have Rs. 160 . How much money does Raveena have?
Which of the following statements about the speed of sound in different mediums at 25°C is/are true? A. In helium gas, the speed of sound is 965 m/s. B. In hydrogen gas, the speed of sound is 1284 m/s.
