Pearl writes down seven consecutive integers, and adds them up. The sum of the integers is equal to 28/9 times the largest of the seven integers. What is the smallest integer that Pearl wrote down?
Pearl writes down seven consecutive integers, and adds them up. The sum of the integers is equal to 28/9 times the largest of the seven integers. What is the smallest integer that Pearl wrote down?
(x + 6) 28
(x) + (x+1) + (x+2) + (x+3) + (x+4) + (x+5) + (x+6) = ––––– • –––
1 9
28x + 168
7x + 21 = –––––––––
9
63x + 189 = 28x + 168
35x = – 21
– 21 3
x = –––– = – –––
35 5
The solution is not an integer, so the
problem, as written, is not satisfied.
Assuming the problem can be solved,
I hope someone will show me my error.
.