Question

will anyone help me!! pleasee!!!
if it takes 4 people to do half a job in 15 days then how many days does it take 10 people to finish the other half of the job?
help is very appreciated

Answer 1

lol, more ppl.. more days? c'mon hashir!

Answer 2

6

Answer 3

6 is the correct answer!

Answer 4

yes i know. thanks
method?

Answer 5

explain please? i need to know how to solve it on my own

Answer 6

lets go slow.
i will wait

Answer 7

since 4 people finish half a job in 15 days, 4 people finish 1/15 of half a job in 1 day and 1 person finishes 1/60 of half a job in 1 day
thus in 1 day 10 people finish 1/6 of half a job and thus in 6 days 10 people finish half a job

Answer 8

ok i wont wait. there are many methods, but here is what i would do because it will work for other problems. first off 4 people take 15 days to do half the job so it would take them 30 days to do the WHOLE job. (whole job is 1)

so each person does
\[\frac{1}{30\times 4}=\frac{1}{120}\] of a job per day.
now you have ten people. each day they do
\[\frac{10}{120}=\frac{1}{12}\] of the job . the whole job is 1. put
\[\frac{1}{12}x=\frac{1}{2}\]
get
\[x=6\]
anhhuyalex way is much snappier and i like it better. but for other problems might need to figure out rate of each worker.

Answer 9

thank you guys!!