Question

Sam scored 59, 64, and 68 on three test. How many points should he get on the fourth test to get an average score of 70?

Answer 1

Answer:

To find this out the easy way, add up all the numbers and an answer, then divide by 4.

59 + 64 + 68 + 63.67 = 254.67

254.67/4 = 63.66

A is not correct.

59 + 64 + 68 + 65.25 = 256.25

256.25/4 = 69.25

B is not quite correct.

59 + 64 + 68 + 75 = 266.

266/4 = 66.5

C is not correct.

59 + 64 + 68 + 89 = 280

280/4 = 70.

D.) is the correct answer.

I hope this helps!

Answer 2

The correct answer would be (D - 89 points)
59+64+68
=191 + 89
=280/4
=70(%)