Question

A hummingbird's heart beats 250 Times in 10 seconds. Use a proportion to find how many times it's heart beats in 32 seconds

Answer 1

250 times: 10secs

? times: 32 secs

Cross Method: 32*250=10*x

                        8000=10*x

                        x=800

Answer: 800 times

                        

Answer 2

It would be 800 times :) 250/10 = 25/1 25×32 = 800/32