If 5 carpenters can make 30 tables in 2 days, how long will it take for 8 carpenters to make 100 tables?

Question

If 5 carpenters can make 30 tables in 2 days, how long will it take for 8 carpenters to make 100 tables?

Answer 1

You need to calculate the time it takes to make one table.

You know that it takes 5X2 carpenter days to make 30, so 10/30 or 1/3 carpenter day per table.

For 100 tables you require 33.3 carpenter days.  If 8 carpenters are working concurrently, then 33.3/8 = 4.16 days.

Answer 2

So 5 carpenters make 15 tables in a day, or 3 each, on average.

Therefore, 8 carpenters make 24 a day,

so 100 will take 4.16 days

Answer 3

I think it would take 12-1/2 days with 8 carpenters to make 100 tables.