Answer:
0.0276 or 1.67 both are correct
Step-by-step explanation:
so if he can complete 20 multiplication facts in 1 minute that means that 15 minutes take the time 35 seconds to 50 seconds lets cut that into 40 seconds so 20+15=35 so one minute and 40 seconds
= 0.0278 hours = 1.67 minutes = 100 seconds
For 00:01:40 0 hours 1 minutes 40 seconds Steps to Calculate Hours 0hr+1min×1hr60min+40s×1hr3600s =0hr+0.0167hr+0.0111hr=0.0278hr
Steps to Calculate Minutes
0hr×60min1hr+1min+40s×1min60s=0min+1min+0.6667min=1.67min
Steps to Calculate Seconds
0hr×3600s1hr+1min×60s1min+40s=0s+60s+40s=100s
