Question

? The ratio of girls who want to become pilots to the girls who want to become engineer
3:4. If the total number of girls is 77, find the number of girls who want to become pilot
and who were to engineer. If Il girls changed their mood from pilot to engineer, find
new ratio?​

Answer 1

Answer:

ratio=3:4

total no of girls =77

no of girls =x

let no of girls want to become pilot =3x

no of girls want to become engineer =4x

according to question

3x+4x=77

7x=77

x=77/7

x=11

girls want to become pilot =33

girls want to become engineer =44

Answer 2

Step-by-step explanation:

meaning of ratio: The ratio of two quantities is the same units is a fraction that one quantity is of the other.

Hello mate here is your answer:

The total no's of girls = 77

The ratio of pilots and engineers is 3:4 respectively.

Let,

the sum of ratio = 3+4 = 7

$nos \: of \: pilot \: = \frac{3}{7} \times 77 = 33 girls \\ nos \: of \: engineer \: = \frac{4}{7} \times 77 = 44 girls \\ if \: 11 \: girls \: changed \: the \: mood \: from \: pilot to engineers \\ then \: nos \: of \: pilot \: = \: 33 - 11 = 22 girls \\ their \: new \: ratio \: = \: 1 \: is \: to \: 2 \: or \: \frac{1}{2}$

thanks