Math Is Fun Forum

  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#1 2006-12-01 04:40:54

Kiran
Member
Registered: 2006-11-15
Posts: 177

supervisor / workers

a supervisor can complete 18 jobs in 3 minutes
a worker can complete 24 jobs in 6 minutes
the worker began to work for 2 minutes and then the supervisor joins in to help
how long would it take them together to finish a total of 88 jobs?


Live 4 Love

Offline

#2 2006-12-01 05:41:55

pi man
Member
Registered: 2006-07-06
Posts: 251

Re: supervisor / workers

The supervisor can complete 18 jobs in 3 minutes or 36 jobs in 6 minutes.   So with the worker (24jobs / 6 minutes) they can complete 60 jobs in 6 minutes.   Or 10 jobs per minute. 

In the 2 minutes the worker worked by himself, he can complete 8 jobs.   That leaves 80 jobs left to complete together.   At a rate of 10 jobs/minute, they would need to work 8 minutes together.

Offline

Board footer

Powered by FluxBB