Sierra's swimming lessons last 1 hour 20 minutes.she finished her lesson at 10:50 am.at what time did her lesson start?

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02-05-2018
Mathematics

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Sierra's swimming lessons last 1 hour 20 minutes.she finished her lesson at 10:50 am.at what time did her lesson start?

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7862815825gigi 7862815825gigi · Answer 1 · 2018-05-02T01:54:17+02:00

7862815825gigi 7862815825gigi

02-05-2018

9 hours and 30 minutes because:
if the time she finished is 10.50 and her lessons are an hour and 20 minutes long you subtract the finishing time to the time it takes for her lesson.

10.50-1.20=9.30
just used a calculator but mental math is usable for this problem.
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