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Answer:
Option A.
<em>The number of elements in the sample space of this experiment is 84</em>
Step-by-step explanation:
The sample space for an experiment represents the number of possible results that may occur when conducting the experiment.
When throwing a die and observe the number obtained there are 6 possible results
When throwing a coin there are 2 possible results.
When spinning a wheel divided into 7 regions we have 7 possible outcomes.
If we combine these three experiments, then the sample space S is composed of the product of the possible results of each experiment.
A motorist drove 150 miles in the morning and;
50 miles in the afternoon
His average rate in the morning was twice his average rate in the afternoon
He spent 5hrs driving
Let the times spent driving in the morning be x
Average speed = Distance ÷ time
= 2(
)
Cross multiplying gives;
750 - 150x = 100x
250x = 750 , x =3
Average speed in the morning is 150/3 = 50miles/hr
Average speed in the afternoon = 50/(5-3) = 25miles/hr