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@satellite73 can we take this one slow too?

sure unit rate again

So 7/6 will be how much 1 pump can empty a pool

careful

lets start with how much 7 pumps do per hour

isn't that what 7/6 finds?

7 pumps take 6 hours, so 7 pumps do \(\frac{1}{6}\) per hour

oh okay

how much does one pump do? don't multiply by 7, divide (like last time)

1/42

ok good
now each pump does \(\frac{1}{42}\) per hour, how much does 4 pumps do (this time multiply)

4/42

right

or you can reduce to get \(\frac{2}{21}\)

hmmmm did we do something wrong? my answer say 42/4 = 10 1/2

you want to see how long it takes to do one job,

solve
\[\frac{2}{21}T=1\] making
\[T=\frac{21}{2}\]

ohhh okay

they do 2/21 of a job per hour, takes 21/2 hours to do one job

ohhh okay

hmmm ok

so do we now multiply by 4?

no now we are done

ohhh okay this is a different method i got it now

we got the unit rate of \(\frac{1}{42}\) that was pump per hour

then we multiplied by 4 to get the rate for 4 pumps and got \(\frac{2}{21}\)

ahhhh ic

then we solved
\[\frac{2}{21}T=1\] the 1 being one pool

if it was two pools it would have been
\[\frac{2}{21}=2\]

hmmm okay i think i understand now i'll review the last 2 problems we did a couple of times

ok if you get stuck let me know

i will thanks <333

we can make one up and do it now if you like

yes yes that would help even more

see that they are not that hard and are largely the same

yea

you want me to make it up, or you want to?

can u ?

k
they numbers might not come out real nice if i make it up off the top of my head, but no matter

ok

first find the unit rate for one man
let me know when you think you have it

1/8 divided by 5 = 1/40

yay!

now the rate for 10 men

1/40 * 10 = 10/40 = 1/4

ok good
now how long to build 2 walls

1/4 * 2= 2/4= 1/2

aw damn we were doing so well

oh crap...

not going to take half an hour !

now we need to go slow
either we solve
\[\frac{1}{4}T=2\]

ohhhhhh yeaaaa thats right so 8

yup

ok i'll keep practicing this

almost got it 100% thanks satellite

ok, i think it is getting easier though right? first part went quick

yw