Rafiq exercised for 3/6 of an hour,while Rohil exercised ofr 3/4 of an hour.Who exercised for a longer time?

Ravi walks 6 km in an hour while Roshan walks 4 km in an hour.What is the ratio of the distance covered by Ravi to the distance covered by Roshan?

In a monthly test, the teacher decides that there will be three questions. one from each of Exercises 5, 6 and 7 of the text book. If there are 12 questions in Exercise 5, 18 in Exercise 6 and 9 in Exercise 7, in how many ways can the three questions be selected ?

Michael finished colouring a picture in 7/12 hour. Vaibhav finished coluring the same picture in 3/4 hour. Who worked longer? By what fraction was it longer?

Solve Q.2 (i) of Exercise 4.1 by using the quadratic formula.

A furniture firm manufactues chairs and tables, each requairing the use of three machines A,B and C. Producing of 1 chair requires 2 hours of machine A, 1hour on machine B and 1 hour on machine C. Each table requires 1 hour each on machine A and B and 3 hours on machine C. The profit realised by selling 1 chair is Rs 30 while for a table is Rs 60. The total time available per week on machine A is 70 hours , on machine B is 40 hours and on machine C is 90 hours. Find the mathematical formulation so as to find the number of chairs and tables that should be made per week soto maximizethe profit.

Catherine used a dice and noted the number which appeared after throwing it. She repeated the exercise 40 times and noted the number every time as shown ahead. .