adek

lily estimate that she was able to answer correctly 35 question out of 40 questions in a test. however, she only scored 75% for the test. find the difference between the actual number of questions that answer correctly and the estimated number of question...

speed of the car is 47.52 km/hr. a lorry wheel is rotating at 400 RPM. what is radius (in cm) of a lorry wheel has a same speed with the car.