Rolf spent 15 hours last week practicing his saxophone if 3/10 of the time was spent practicing warm up routines, how much time did he spend practicing warm up routines ?
1 answer:
3/10 of the time = time spent on practicing warm up routines... Time spent = 15 hours remember that 'of' is usually multiply (x) so ---- 3/10 x 15 =4.5 hrs Hope this helps
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