A gray whales heart beats 64 times in 8 minutes what is the whales heart rate in beats per minute

A. 8 heartbeats per minute
B. 56 heartbeats per minute
C. 72 heartbeats per minute
D. 512 heartbeats per minute

Respuesta :

you need to find the unit rate. if you have 64/8, 8 divided by 8 = 1. 64 divided by 8 is 8
A.8 heartbeats per minute 
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