At a certain college, the ratio of men to women is 5 to 4. If there are 2800 men, how many women are there?

Additionally, consider a cookie recipe which calls for [tex]$3 \frac{1}{2}$[/tex] cups of flour and makes 5 dozen cookies. How many cups of flour are needed to make 1 dozen cookies?



Answer :

To solve the problem of finding out how many women are there at a college where the ratio of men to women is 5 to 4, with 2800 men, follow these steps:

1. Understand the given ratio and quantities:
- The ratio of men to women is 5 to 4.
- There are 2800 men.

2. Represent the ratio mathematically:
- Since the ratio of men to women is 5:4, for every 5 men, there are 4 women.

3. Set up the ratio in equation form:
[tex]\[ \frac{\text{Number of men}}{\text{Number of women}} = \frac{5}{4} \][/tex]
Let [tex]\( w \)[/tex] represent the number of women.

4. Substitute the known quantity (number of men) into the equation:
[tex]\[ \frac{2800}{w} = \frac{5}{4} \][/tex]

5. Solve for [tex]\( w \)[/tex] by cross-multiplying:
[tex]\[ 2800 \times 4 = 5 \times w \][/tex]
[tex]\[ 11200 = 5w \][/tex]

6. Isolate [tex]\( w \)[/tex] by dividing both sides of the equation by 5:
[tex]\[ w = \frac{11200}{5} \][/tex]
[tex]\[ w = 2240 \][/tex]

Therefore, the number of women at the college is 2240.