Soal SMA · Soal cerita · Kesulitan 3/5
A study surveyed 500 students about their part-time jobs. It found that 60% of those who worked more than 15 hours per week had a GPA below 3.0, while only 30% of those who worked 15 hours or less had a GPA below 3.0. If 200 students worked more than 15 hours per week, how many students in total had a GPA below 3.0?
- A.120
- B.210
- C.180
- D.150
Kunci jawaban & pembahasan
Jawaban: 210
Students working >15 hours: 200, 60% have GPA<3.0 → 120. Students working ≤15 hours: 300, 30% have GPA<3.0 → 90. Total = 210.
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