Answer:
64
Step-by-step explanation:
20*.4=8
20-8=12
12+12+20+20=84
Answer:
3.5 hours
Step-by-step explanation:
16.50*4=$66
123.75-66=57.75
57.75/16.5=3.5 hours
123.75-4x=h
x is pay
h is hours worked
The answer is B. 5P5 x 20P15.
This is because to make the second grade students to sit in the first row we have 5 seats and 5 students so we will permute the 5 students to those 5 seats. So 5P5.
Now we are left with 20 seats and 15 first grade students so we can simply permute those 15 students into those 20 seats. So 20P15.
Finally using the counting rule principle we will multiply both of these so 5P5 x 20P15.
