Question

In a cafeteria, the ratio of the number of girls to the number of boys was 6:7. When 117 girls entered, the new ratio of the number of girls to boys was 7:6. How many pupils were in the auditorium at first.

Answer 1

100.
i think.

Answer 2

217, you have to add 117 amount of girls plus the amount of boys. You get 100 from 117/7 then times 6

Answer 3

so its 217?

Answer 4

Should be yes.

Answer 5

But how did you get that..?

Answer 6

You take 217/7 and then times it by 6 to get how many guys there were then add that number to the 117 girls already in there since it says amount of pupils

Answer 7

217/7 = 31 * 6 = 186 + 117 = 303

Answer 8

So sorry, I meant 117/7 * 6= 100

Answer 9

so its 217... hmm

Answer 10

In the way I interpret the question yes that is correct.

Answer 11

it was asking how many were in the auditorium "AT FIRST"...

Answer 12

Yes and if you look at it the ratio went from 7:6 to 6:7, therefore the number of people should stay the same. I would think.

Answer 13

it went from 6:7 to 7:6

Answer 14

Eh, same different. The ratio stayed the same in the long run. If it were to go from 6:7 to 3:4 then I would think there is more to it.

Answer 15

Ok so its still 217...

Answer 16

I believe so. Ask around some more if you'd like a second opinion.

Answer 17

No i think your rig ht because that makes sense and your the only one replying