Respuesta :
Answer:
Answer is 15.7 minutes.
Step-by-step explanation:
I hope it's helpful!
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Answer:
6.5 minutes
Step-by-step explanation:
T0 = initial time
T1=T0 - 2.1
T2=T1 x 0.9= 3.96
T1 = 3.96/.9= 4.4
T0=T1+2.1=6.5
(note the 1/10 reduce is shown as 9/10)