Step-by-step explanation:
1 hour=680/5
680/5=136
1hour=136
3hours=3×136
=408
hope this helps
please mark as brainliest
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Answers & Comments
Step-by-step explanation:
1 hour=680/5
680/5=136
1hour=136
3hours=3×136
=408
hope this helps
please mark as brainliest