Approximately how much distance per minute does the Earth rotate?

BPSC treated this question as having no correct option (cancelled).

Explanation

The circumference of the Earth at the equator is about 40090.28 km. The Earth covers this distance on its own axis in about 24 hours; i.e., the rotational speed of the Earth on its axis = 40090.28 km/24 hours = about 1670 km/hour. On this basis, the rotational speed of the Earth at the equator per minute = 1670 km/60 minutes = 27.8 km/minute. None of the options matches the required answer.