JAMB - Mathematics (1982 - No. 23)

Express 130 kilometers per second in meters per hour
7.8 x 10-5
4.68 x 106
7,800,000
4.68 x 108
7.80 x 105

Explanation

1km = 1000m

60sec. = 1 mins

60 mins. = 1 hr

130000m per sec = 130000 x 3600

= 468000000m/hr

= 468 x 108 m/hr

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