Question

There is I teacher for every 18 students on a school trip. How many teachers are there if 72 students go on the school trip?

Answer 1

Answer:

55/128� * 100 = 43% females in the group

Step-by-step explanation:

On a school trip the ratio of the number of teachers to students is 1:15.

The ratio of male students to female students is 7:5.

Work out what percentage of people on the trip are female.

Give your answer correct to the nearest whole number.

I've tried multiplying by 5 but I just don't get ratios.

:

you have to know the male to female teachers ratio also

Let's assume the male to female teachers was 3:5, that means we have a minimum of�8 teachers

The teacher student ratio is given as 1:15, therefore we have 15 *�8 = 120 students

The total people, students and teachers = 128

 

We know we have� 5 female teachers. Find how many female students

let x = the multiplier, then

7x = number of male students

5x = number of female students

7x + 5x = 120

12x = 120

x = 120/12

x = 10

therefore the number of female students 10*5 = 50 female students

Total female teachers and female students 5 + 50 = 55

Find the percentage females (55) �to total in the group (128)

55/128� * 100 = 43% females in the group