sum of first 4 = 4(15) = 60
sum of last 3 = 3(8) = 24
sum of all = 84
avg for all = 84/7 = 12
In a set of seven numbers, the average of the first four is 15 and the last three is 8. What us the average of all seven numbers?
3 answers
Was part of my homework and worked
I need thst same answer and I can’t get it