Answer:the answer is 40
Step-by-step explanation:
Because you do 5 times x
The order of operations is:
Parenthesis
Exponent
Multiplication
Division
Addition
Subtraction
So division comes first:


Now subtraction:
I hope this helps you.
4/10 = .4
3/8 = .375
.4 > .375, so Clara will reach more people
Another way to look at it:
4/10 * 40 to 4 * 4 = 16 people reached
3/8 * 40 to 3 * 5 = 15 people reached