Soal SMP · Soal cerita · Kesulitan 4/5

A student scores 75, 80, and 85 on three tests. What score must they get on the fourth test to have an average of 85?

A.100
B.90
C.95
D.85

Kunci jawaban & pembahasan

Jawaban: 100

Sum of first three = 240. To average 85 over four tests, total must be 340. Fourth test = 340 - 240 = 100.

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