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Answer:
The problem statement of direct proportion
Direct proportion problem is an inverse proportion. Therefore the direct proportion will give a reciprocal value.
Let's assume a population is 100. The first problem will have 25 items and the second will have 25 items.
Now the formula for solving direct proportion will be as follows:
Example 1
How to find the proportion of the third grade students in the fourth grade class
There are a total of 100 students. Out of those 25 are third grade students and 35 are fourth grade students. What is the proportion of the third grade students in the fourth grade class?
Answer: 100 ÷ 35 = 2.857
Direct proportion is invers proportional. If we divide one number by the other, then we will get the reciprocal value.
Example 2
How to find the proportion of the fourth grade students in the fourth grade class
There are a total of 100 students. Out of those 35 are third grade students and 65 are fourth grade students. What is the proportion of the fourth grade students in the fourth grade class?
Answer: 100 ÷ 65 = 1.545
Therefore the reciprocal value is 1.545.