ECZ 2012 · O-Level Paper 1 — Variation
Mr Hambwiimbwi planned to employ 20 men to build his house in 7 days. On the day work was to start, he reduced the number of men so that the work would now be completed in 28 days, working at the same rate. How many men were needed for the work?
- A. 80
- B. 35
- C. 15
- D. 5
Verified working — step 1
The job is 20 x 7 = 140 man-days. Spreading the same 140 man-days over 28 days needs 14028= …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question