The ratio of pilots to crew on a flight is 3:7. If there are 50 crew members, how many pilots are there?

The ratio of pilots to crew on a flight is 3:7. If there are 50 crew members, how many pilots are there?

• A. 15
• B. 21
• C. 18
• D. 20

Answer: (B)

To find the number of pilots based on the given ratio of pilots to crew, we start with the ratio itself, which is 3:7. This means that for every 3 pilots, there are 7 crew members. Given that there are 50 crew members, we can set up a proportion to find the number of pilots. Since the ratio of pilots to crew is maintained, we can express it as: \[ \frac{\text{Number of pilots}}{\text{Number of crew}} = \frac{3}{7} \] Let the number of pilots be \(x\). Therefore, we have: \[ \frac{x}{50} = \frac{3}{7} \] To solve for \(x\), we can cross-multiply: \[ 7x = 3 \cdot 50 \] \[ 7x = 150 \] Now, we divide both sides by 7: \[ x = \frac{150}{7} \approx 21.43 \] Because \(x\) must be a whole number, we consider the closest integer that fulfills the ratio while keeping consistent with the total crew members of 50. Since we need to maintain

To find the number of pilots based on the given ratio of pilots to crew, we start with the ratio itself, which is 3:7. This means that for every 3 pilots, there are 7 crew members.

Given that there are 50 crew members, we can set up a proportion to find the number of pilots. Since the ratio of pilots to crew is maintained, we can express it as:

[

\frac{\text{Number of pilots}}{\text{Number of crew}} = \frac{3}{7}

]

Let the number of pilots be (x). Therefore, we have:

[

\frac{x}{50} = \frac{3}{7}

]

To solve for (x), we can cross-multiply:

[

7x = 3 \cdot 50

]

[

7x = 150

]

Now, we divide both sides by 7:

[

x = \frac{150}{7} \approx 21.43

]

Because (x) must be a whole number, we consider the closest integer that fulfills the ratio while keeping consistent with the total crew members of 50. Since we need to maintain