Question

Help, plz

Two large and 1 small pumps can fill a swimming pool in 4 hours. One large and 3 small pumps can also fill the same swimming pool in 4 hours. How many hours will it take 4 large and 2 small pumps to fill the swimming pool.(We assume that all large pumps are similar and all small pumps are also similar.)

Answer 1

@whydoihavetosignup1

Answer 2

@Phebe

Answer 3

From the first information given you know that:

2L + 1S = 1 P => 4H

The question now is:

4L + 2S = 1P in how many hours ?

Answer 4

@TTP

Answer 5

Evaluate it for a second and tell me if you notice anything about these two equations:

2L + 1S
4L + 2S

Answer 6

tbh i rly dont like Mathematics lolzz but ima see what i can do

Answer 7

It's okay, I got this.

Answer 8

okay XD

Answer 9

Yeah let him get it :)

Answer 10

It depends on Savannah if she wants to learn how to solve it or if she just wants a clear answer.

Answer 11

Can't solve this one bae any other subject i can do

Answer 12

Human calculator gets the job done

Answer 13

R u good at history?

Answer 14

Get this question done first

Answer 15

Ok

Answer 16

im very good at history

Answer 17

So again, can you notice anything particular about the first information given, that:

* 2 large pumps with 1 small pump fill 1 swimming pool (in 4 hours)

And what is asked of you, that

* 4 large pumps with 2 small pumps fill 1 swimming pool (in how many hours?)

Answer 18

I got the answer! Thanks

Answer 19

You don't even need the second information (that 1 large pump with 3 small pumps fill the swimming pool in 4 hours)

Answer 20

Did you understand the principle though ?

Answer 21

Yea, thanks for ur help

Answer 22

Solve for R and r the system of first two equations then substitute in the third and solve for T to find the time. T = 5/3 hours = 1 hour 40 minutes. us what i found :/

Answer 23

What the hell, no.

Answer 24

There are twice as many pumps.

Answer 25

That's what I wanted her to notice.

Answer 26

ohh....

Answer 27

So let's say 2 workers can complete something in 1 hour. Twice as many workers would complete the same thing in...30 minutes of course.

Answer 28

lolzzz!!! he said WTH no

Answer 29

at least dude tried
on tha coool i didnt get the Q either

Answer 30

but now i do

Answer 31

So here, 2 large pumps + 1 small pump complete something (filling a swimming pool) in 4 hours.

Answer 32

Therefore, twice as many pumps (4 large and 2 small) complete the same thing (filling the same swimming pool) in half the time (2 hours).

Answer 33

You da real MVP

Answer 34

It's not a normal equation man, no worries. I thought maybe putting it in the form of an equation would help Savannah understand.

Answer 35

It did! Thanks