Percentages are a way of expressing a fraction of a whole. For example, 45% means 45 out of 100. To find the value that corresponds to a percentage, we can set up a proportion where the percentage is the fraction of the whole that we're looking for. We can then cross-multiply and solve for the unknown value.
To explain the last one, we can use the formula for finding the percentage of a number:
Percentage * Number = Result
In this case, we have:
80% * Number = 400
To solve for the value of "Number," we can rearrange the formula to isolate the variable:
Answers & Comments
Answer:
45% of 200 is 90
20% of 300 is 60
35% of 857.14 is 300
50% of 600 is 300
75% of 600 is 450
70% of 400 is 280
9% of 400 is 36
20% of 700 is 140
60% of 600 is 360
80% of 500 is 400
45% of 200 is 90
To find out, we can set up a proportion:
45/100 = 90/x
where x is the number we're trying to find.
Cross-multiplying gives us:
45x = 9000
Dividing both sides by 45 gives us:
x = 200
Therefore, 45% of 200 is 90.
20% of 300 is 60
Following the same steps as before:
20/100 = 60/x
20x = 6000
x = 300
Therefore, 20% of 300 is 60.
35% of 857.14 is 300
35/100 = 300/x
35x = 30000
x = 857.14
Therefore, 35% of 857.14 is 300.
50% of 600 is 300
50/100 = 300/x
50x = 30000
x = 600
Therefore, 50% of 600 is 300.
75% of 600 is 450
75/100 = 450/x
75x = 45000
x = 600
Therefore, 75% of 600 is 450.
Explanation:
Percentages are a way of expressing a fraction of a whole. For example, 45% means 45 out of 100. To find the value that corresponds to a percentage, we can set up a proportion where the percentage is the fraction of the whole that we're looking for. We can then cross-multiply and solve for the unknown value.
To explain the last one, we can use the formula for finding the percentage of a number:
Percentage * Number = Result
In this case, we have:
80% * Number = 400
To solve for the value of "Number," we can rearrange the formula to isolate the variable:
Number = Result / Percentage
Plugging in the values we have, we get:
Number = 400 / 0.8
Number = 500
Therefore, 80% of 500 is 400.