Hey guys i’m sure if 18 is correct when i tryed it can you me with that problem i need this answer by 11: 00 i leave at 11: 00 for class

D is the answer

One way : Since you know that the average of the 4 people is 85% you can see that the fourth person has to be higher than 85% because 2 of the 3 known test scores is lower. By using process of elimination you would get 95%

Another way (mathematical way): Add 70+75+100+95= 340 dived that by 4. 340/4= 85

Hope this helped sorry it was late