Question

Express 8.4km/min in km/hr *
504 km/hr
84 km/hr
550 km/hr

Answer 1

504 km/hr

Explanation:

since its 8.4 per min, you multiply it by 60. thats 504

Answer 2

8.4km/min( 60 min/ hr) = 504km/hr

Since your converting from min to hours you multiply by (60 min/ hr) to cancel out the min.