keliswilkes keliswilkes

14-03-2021
Mathematics

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A mechanical device makes a clicking sound every 3 seconds. If the device was plugged on for 15 hours, calculate the number of times the device made the clicking sound.

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lilkat6 lilkat6

14-03-2021

900 times

Why?

15•60=900

(The 60 is because there are 60 mins in an hour).

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