Soal SMP · Soal cerita · Kesulitan 4/5

A bag contains red and blue marbles. The ratio of red to blue marbles is 3:5. If there are 40 marbles in total, how many red marbles are there?

A.15
B.20
C.25
D.10

Kunci jawaban & pembahasan

Jawaban: 15

Total parts = 3+5=8. Red = 3/8 × 40 = 15.

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