A school bus during morning pickups to calculate its average speed between 2.8 km and 4.2 km.
1 answer:
<u>Answer: </u>
Option (c)
The average speed between 2.8 km and 4.2 km is 42 km/h
<u>Explanation:</u>
Given, the distance between 2.8 km and 4.2 km is 4.2 - 2.8 = 1.4 km
Time (in hours) between 2.8 km and 4.2 km
= 0.084 – 0.051
= 0.033 hr
Speed =
Speed =
Speed = 42.4 km/hr = 42 km/h (rounded to nearest)
Therefore, the average speed between 2.8 km and 4.2 km is 42 km/hr
Hence, Option (C) is correct
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Answer:
191 people do not have a briefcase
Step-by-step explanation:
Proportion states that the two ratios or fraction are equal
As per the given condition:
On the subway 8 out of 11 people are carrying a briefcase.
⇒Total number of people = 11
and number of people carrying a briefcase = 8
Remaining number of people that do not carrying a briefcase = 11-8 = 3
Now,
Based on this information, if there are 700 people on the subway
Let x be the number of people do not have a briefcase
By definition of proportion :
Multiply 700 both sides, we have
Simplify:
x = 190.90≈ 191
Therefore, 191 people do not have a briefcase