A volunteer group wants to make 280 calls. If the calls are distributed evenly to 4 groups of 7 volunteers, how many calls does each volunteer have to make to reach the goal?
There are a total of 4 groups * 7 volunteers per group = <<4*7=28>>28 volunteers.
Therefore each volunteer has to make 280 calls / 28 volunteers = <<280/28=10>>10 calls. Answer: \boxed{10}.
To find out how many calls each volunteer has to make to reach the goal, we need to divide the total number of calls by the number of volunteers.
First, let's calculate the total number of volunteers:
4 groups × 7 volunteers/group = 28 volunteers
Next, let's divide the total number of calls by the total number of volunteers:
280 calls ÷ 28 volunteers = 10 calls/volunteer
Therefore, each volunteer has to make 10 calls to reach the goal.
To find out how many calls each volunteer has to make to reach the goal, we can divide the total number of calls (280) by the total number of volunteers (4 groups of 7 volunteers).
First, let's calculate the total number of volunteers:
Total number of groups = 4
Volunteers per group = 7
Total number of volunteers = 4 groups x 7 volunteers/group = 28 volunteers
Now, divide the total number of calls by the total number of volunteers to find out how many calls each volunteer has to make:
Calls per volunteer = Total number of calls / Total number of volunteers
Calls per volunteer = 280 calls / 28 volunteers = 10 calls
Therefore, each volunteer has to make 10 calls to reach the goal of 280 calls.