Use the worker-time-job formula, which is:where W1 = the number of workers in the first situation. T1 = the number of time units (days in this case) in the first situation. J1 = the number of jobs in the first situation. W2 = the number of workers in the second situation. T2 = the number of time units (days in this case) in the second situation. J2 = the number of jobs in the second situation. W1 = 10 W2 = 6 T1 = 5 T2 = the unknown quantity J1 = 1 J2 = 1 [Notice that there is only 1 job done in both situations] Edwin