Question 1118186
weighted average of 60 means total points/number of tests is 60, so total number of points is 180.
If both tests were 70, then they are the highest and the middle, since both are above the average needed.
70*.5=35
70*.3=21
That leaves 4 points left for the last score, which counts 20%
If .2x=4
x=20.
The last score must be at least a 20, so that is the lowest score.