If a hamsters heart beats 450 times in minute how many does it beat 40 seconds?

1. Figure out the heartbeats per second:

* There are 60 seconds in a minute, so divide the hamster's heartbeats per minute by 60: 450 beats/minute / 60 seconds/minute = 7.5 beats/second

2. Calculate heartbeats in 40 seconds:

* Multiply the heartbeats per second by the number of seconds: 7.5 beats/second * 40 seconds = 300 beats

Answer: A hamster's heart beats approximately 300 times in 40 seconds.