Soal SMP · Soal cerita · Kesulitan 3/5

A car travels from Town A to Town B at an average speed of 60 km/h and returns at an average speed of 40 km/h. What is the average speed for the whole journey?

A.48 km/h
B.50 km/h
C.45 km/h
D.52 km/h

Kunci jawaban & pembahasan

Jawaban: 48 km/h

Average speed = 2 × 60 × 40 / (60 + 40) = 4800 / 100 = 48 km/h.

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