The time taken to complete a piece of work depends on the workers employed. The time can be calculated from the formula T= , where T is the time (in hours) and N is the number of employees.
a) If three workers take 12 hours to complete the work, find the value of k.
Solution :
| T = | k | |
| N | ||
| 3 = | k | |
| 12 | ||
| = K | ||
| N=4 | ||
| T= | =9 | |
| T= | =6 | |
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