A) One way: multiply $1365 by 2 since that is the amount earned for half a month. The answer is $2730. You can also find his monthly rate by dividing $1365 by 6 to get $227.50 and multiply it by 12 to get $2730 as well.
B) Take the number $227.50 a month you got from the second way to solve question A and divide it by 4 to get $56.875 a week then divide it by 10 to get the hourly rate of $5.69 (rounded to nearest cent).