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Mathematics 15 Online
OpenStudy (anonymous):

There are 4 pots for every 3 pans for every 21 glasses. There are a total of 476 dishes. How many pans are there?

OpenStudy (anonymous):

Right now what I've done is this: X= number of pans. 3x+4x+21x=476. Yes, it's totally stupid. Help please??? :/

OpenStudy (amistre64):

set up the ratio

OpenStudy (anonymous):

4:3:21

OpenStudy (amistre64):

4:3:21

OpenStudy (amistre64):

now i have to wonder if i read this right

OpenStudy (amistre64):

is it 4 pots for every 3 pans; and 3 pans for every 21 glasses? which might amount to the same thing or is it 4 pots for every 3 pans for every 21 glasses; and 4 pots for every 21 glasses ?

OpenStudy (amistre64):

that last bit should read or is it 4 pots for every 3 pans; and 4 pots for every 21 glasses ?

OpenStudy (anonymous):

It is A, I believe. The way that I wrote it in the question is just as it was in the algebra book.

OpenStudy (amistre64):

if we stick to ratios then: 4:3:21 is a total of 28 dishes (4+3+21)

OpenStudy (amistre64):

476/ 28 = some number that we can scale it all by

OpenStudy (amistre64):

so; 17 it is 17(4:3:21 = 28) is 68:51:347 = 476

OpenStudy (anonymous):

Wait. I don't quite understand what you're saying. Where does the 17 come from???

OpenStudy (amistre64):

if all we had was 4 and 3 and 21; how many dishes would we have all together?

OpenStudy (anonymous):

28.

OpenStudy (anonymous):

476 divided by 28 is 17.

OpenStudy (amistre64):

so, they tell us that its the same ratio; but alot more dishes. 28 times (what) = 476 ?

OpenStudy (amistre64):

correct

OpenStudy (anonymous):

i have now read this four times and i cannot make sense out of it at all

OpenStudy (amistre64):

then our ratio is the same; its just scaled by 17

OpenStudy (anonymous):

It's all lit up in shining colors now! Thanks so much, amistre64.

OpenStudy (anonymous):

what are the "dishes"??

OpenStudy (amistre64):

lol, youre welcome :)

OpenStudy (anonymous):

It's a word problem. They use little objects like "dishes" to make it seem like a real life problem.

OpenStudy (amistre64):

in real life, i have a bowl, a spoon, and a straw

OpenStudy (anonymous):

they let you have a straw? i only got the spork

OpenStudy (amistre64):

its a bendy lol

OpenStudy (amistre64):

which would be fine if it was designed to be a bendy ... but

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