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