For every 5 buttons that Caleb sold, Cole sold 2. Cole sold 36 fewer buttons than Caleb. How many buttons did Cole sell?
B==Caleb, C==Cole, N==Total buttons
5 + 2 == 7 total ratios
5/7N - 2/7N ==36, solve for N
N==84 - total number of buttons
5/7 * 84 ==60 buttons sold by Caleb
2/7 * 84 ==24 buttons sold by Cole
Check: 60 - 24 ==36 fewer buttons sold by Cole.