Answer:
(a) To calculate Mr. James's total wage for a basic week, we can use the following formula:
The total wage for the basic week = Basic rate x Number of hours worked
Given that Mr. James works 40 hours a week at a rate of $16 per hour, his total wage for a basic week would be:
Total wage for basic week = $16 x 40 = $640
Therefore, Mr. James's total wage for a basic week is $640.
(b) To calculate Mr. James's wage for a week in which he worked 47 hours, we need to consider his basic and overtime rates. Since his overtime rate is $4 per hour more than his basic rate, his overtime rate would be:
Overtime rate = Basic rate + $4
Overtime rate = $16 + $4 = $20 per hour
Now, we can calculate his wage for the week as follows:
The wage for the week = (Number of basic hours x Basic rate) + (Number of overtime hours x Overtime rate)
Wage for the week = (40 x $16) + (7 x $20)
Wage for the week = $640 + $140
Wage for the week = $780
Therefore, Mr. James's wage for a week in which he worked 47 hours is $780.
(c) To find the number of hours Mr. James worked during one week if he was paid a wage of $860, we can use the same formula as in part (b) but rearrange it to solve for the number of hours:
Number of hours worked = (Wage for the week - (Number of basic hours x Basic rate)) / (Overtime rate - Basic rate)
Number of hours worked = ($860 - (40 x $16)) / ($20 - $16)
Number of hours worked = ($860 - $640) / $4
Number of hours worked = $220 / $4
Number of hours worked = 55
Therefore, Mr. James worked 55 hours during the week, for which he was paid $860.