A farmer has two tractors A and B the two tractors working together can plough

A farmer has two tractors a and b the two tractors

This preview shows page 12 - 15 out of 15 pages.

21) A farmer has two tractors A and B. the two tractors, working together can plough a farm in 2½ hours. One day, the tractors started to plough the farm together. After 1 hr 10 min, tractor B broke down but A continued alone and completed the job after a further 4 hours.Find: a)The fraction of the job done by the tractors, working together for one hour.(2 marks)b)The fraction of the job done by tractor A after B broke down.(4 marks)c)The time each tractor working alone would have taken to plough the farm.(4 marks) 12
Image of page 12

Subscribe to view the full document.

22) Using a ruler and a pair of compasses only. 13
Image of page 13
23) A solid is made of a conical frustum and a hemisphere on top as shown in the figure. The dimensions are as below:r = 3.5cm8cmr=4.2cm ii) The curved surface of the frustum. (3 marks) iii) The hemispherical surface. (2 marks) 14
Image of page 14

Subscribe to view the full document.

24) A triangular plot ABC is such that the length of side AB is two thirds that of BC. The ratio of lengths AB : AC = 4 : 9 and the angle at B is obtuse. If the perimeter of the plot is 38m. calculate: 15
Image of page 15
  • Fall '18
  • ANYANZWA

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes