A bag contains 10 white marbles and 40 green marbles . What percentage of the marbles are white
1 answer:
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Answer:
Step-by-step explanation:
The complete exercise is: "Tomos is a skier he completed a ski race in 2 min 6 seconds the race was 525 m in length. Tomos assumes that his average speed is the same for each race. using this assumption, work out how long tomos should take to complete an 800 m race give your answer in minutes and seconds"
For this exercise you can use the following formula to find the average speed :
Where "d" is the distance and "t" is the time.
In this case, based on the information given in the exercise, you can identify that:
Since he completed a ski race in 2 min 6 seconds, and 1 minute has 60 seconds, you ge that this time in seconds is:
Substitute these values into the formula to find the average speed:
The formula for the time is:
Knowing that Tomos assumes that his average speed is the same for each race, for the 800 meters race you can identify that:
So, substituting values into the formula and evaluating, you get that the time it takes him to complete this race is:
Convert from seconds to minutes:
Converting 0.2 minutes to seconds, you get:
Therefore: