<span>The main difference between intrinsic and extrinsic motivation is a. what your goals are c. who is setting the goal b. when you plan to reach your goals d. none of these</span>
If M is 20% less than N, then we can think of M as being 80% of N. This gives us a ratio of 80:100 (80% to 100%, 20% less), which can then be simplified to the ratio 4:5.