Algebraic equations
ALGEBRAIC EQUATIONS · IMAT Doutor1 / 1
A car travels 120 km at 60 km/h and returns along the same road at 40 km/h. What is its average speed for the whole journey?
A
48 km/h
B
50 km/h
C
45 km/h
D
52 km/h
E
100 km/h
Keyboard: A–E to choose, Shift + letter to cross out, Enter to confirm.