Answer:
Find P percent of X
Find what percent of X is Y
Find X if P percent of it is Y
Step-by-step explanation:
Example: What is 10% of 150?
Convert the problem to an equation using the percentage formula: P% * X = Y
P is 10%, X is 150, so the equation is 10% * 150 = Y
Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10
Substitute 0.10 for 10% in the equation: 10% * 150 = Y becomes 0.10 * 150 = Y
Do the math: 0.10 * 150 = 15
Y = 15
So 10% of 150 is 15
Double check your answer with the original question: What is 10% of 150? Multiply 0.10 * 150 = 15
2
Answer:
x = 132/2 or x = 67 1/2
Step-by-step explanation:
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7 minutes is the time can you afford to walk
<em><u>Solution:</u></em>
Given that, train is leaving in 11 minutes and you are one mile from the station
Let "x" represent how much time can you afford to walk
Then, (11 - x) is the time you run
You can walk at 4mph and run at 8mph
<em><u>Convert to miles per minute</u></em>
1 hour = 60 minutes
We know that,
Given that, you are one mile from the station
Therefore,
1 mile = distance walk + distance run
Thus, 7 minutes is the time can you afford to walk
Answer:
The coronary heart disease specific mortality rate/density of participants in this cohort
= 13.57%
Step-by-step explanation:
a) Data and Calculations:
Total participants in the cohort = 7,000 persons
Total person-years contributed = 56,232
Death during follow-up = 1,890
Number of death due to coronary heart disease = 950
Mortality rate/density of participants in this cohort
= 950/7,000 * 100 = 13.57%
b) The result suggests that 13.57% of the 7,000 participants died during follow-up out of coronary heart disease. This number represents about 50% (950/1,890 * 100) of all deaths recorded during follow-up.
