Robin ran a 10- kilometer race in 42 minutes 30 seconds.what was her averge rate(kilometers per minute)
2007-06-12 13:11:01 · 4 answers · asked by baby girl 123 1 in Science & Mathematics ➔ Mathematics
10 km / 42.5 min = 0.235 km/min
2007-06-12 13:16:34 · answer #1 · answered by Crystal 2 · 0⤊ 0⤋
Her average rate, or velocity, is found by dividing the distance traveled by the time it took to travel it.
42 minutes and 30 seconds = 42.5 minutes
10 kilometers / 42.5 minutes = 0.2353 kilometers per minute
2007-06-12 13:17:57 · answer #2 · answered by lithiumdeuteride 7 · 1⤊ 0⤋
10 kilometres = 2550 seconds
1 kilometre = 255 seconds
255 seconds = 4 minutes 42 seconds
ANSWER 1 kilometre every 4 minutes 42 seconds
2007-06-12 13:29:12 · answer #3 · answered by ann g 1 · 0⤊ 0⤋
42 min 30 seconds=42.5 min
Average speed
=10/42.5
=0.2353 km/min
2007-06-12 13:18:22 · answer #4 · answered by alpha 7 · 0⤊ 0⤋