Answer:
The answer is:
30 minutes.
Step-by-step explanation:
We are given the following information:
at 160 m/min, tool life = 5 min.
at 120 m/min, tool life = 17 min.
This means that as the speed reduced from 160 m/min to 120 m/min, the tool life increased from 5 min. to 17 min, hence the difference between the changes are:
speed = 160 - 120 = 40 m/min
tool life = 17 - 5 = 12 min.
Therefore, it can be concluded that a change of speed of 40 m/min, increases the tool life by 12 min.
40 m/min = 12 min
∴ 1 m/min = 12/40 min.
∴ 100 m/min = 12/40 × 100 = 0.3 × 100 =30 min.
Answer:
a) 5:3
b) 25:12
c) 1:2
Step-by-step explanation:
a) 20:12 = 20/12 = 10/6 = 5/3 = 5:3
b) 25:12 -> cannot be simplified so -> 25:12 itself
c) 10:20 = 1/2 = 1:2
2 minutes 30 seconds - 3 minutes
Answer:
The standard notation would be 141.7
Step-by-step explanation:
Answer:
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<em><u>5.c</u></em>
Step-by-step explanation:
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