12 houses
15 carpenter, 45 houses, 90 days. Each carpenter restores 3 houses in 90 days. 5 carpenter restore 15 houses in 90 days. Therefore, 5 carpenters restore 30 houses in 180 days.
20
180 days
80
there are 7 days in a week because it took God 7 days to build the world.
2.5 men.
24 houses
75 / 5 = 15 days for 12 men to build one house. 15x12 = 180 days for 1 man to build 1 house. 180 x 7 = 1260 days for 1 man to build 7 houses. 1260 / 20 = 61 days for 20 men to build 7 houses.
Building 5 houses takes 12 x 75 ie 900 man-days. 20 men will thus take 900/20 ie 45 days.
How ships are built now a days...?
3 days
30 days.
Because most people live in mexico?People these days...
Techinically, the men aren't directly classified as workers but if your question is indeed quoting that the men are workers then the answer is 7.5 days. To explain, 1.5 times 1.5 =2.25 -> 1.5 houses 3 times 1.5 =4.5 days -> 3 houses 1/1 -> 2/3 houses 3/1->2/3 times 3 = 2 5/2 or 5 divided by 2 =2.5 3 times 2.5 = 7.5 (Please tell me if I am correct for I'm in middle school but can make very careless mistakes.)
the correct answer is 120 days. You must analyze the relationship of people per house (10 people build 60 houses=6 houses per person over time span). 5 people would then build 30 houses in the exact same time frame.
1 year and 45 days to buildthat's your answer
This was a previous incorrect answer*DIVIDE BY 2! everything is in half. half the people half the houses then it stands to reason HALF THE DAYS!!!!! the answer is 60*.....Actually the correct answer is 120 days. You must analyze the relationship of people per house (10 people build 60 houses=6 houses per person over time span). To prove this just imagine if the question asked how long 1 person would take to build 6 houses. You would not simply divide by 10 to get 12 days.