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If 20 men can build a house in 60 days how many men will build it in 15 days?
Jennypedernal
if 20 men can build a house in 30 days how many men can do it in 24 days
Edison Punes
Wiki User
∙ 14y agoTo do the same job in 1/4 the time, it will take four times the labor force. 20 * 4 = 80 men. ■
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16 men can do a piece of work in 10 days How many men are needed to complete the work in 40 days?
4 men are required
If 6 men took 20 days to plow 1 acre of land how many days will 4 men will take to plow 1 acre of land?
6 men took 20 days so it is 120 man-days worth of work. 4 men will take 120/4 = 30 days to do the work.
Indirect proportion problems?
a man is building a fence for 3 days if 3 men build the fence, how many days can they build it? solution: 1x3=3/3= 1the answer is 1!===There's no such commonly recognised thing as 'indirect proportion'. If you mean Inverse Proportion, this is when one quantity decreases as another increases by the same factor.As an example, the time it takes to run 100 m is inversely proportional to the speed you run at - if you double your speed, it takes you half as long.Many maths problems run along the lines of "If it takes three men four days to build a wall, how long will it take five men to build the same wall?". This is inverse proportion. As you increase the number of men by a factor of 5/3, you decrease the time taken by a factor of 5/3, so the answer here is 2.4 days.I hope that helps!
If 10 men take 6 days to lay 1000 bricks then how many days will it take 20 men working at the same rate to lay 5000 bricks?
15 days
A math problem that equals 1?
Four men can paint eight houses in two days.How many days does it take a man to paint a house ?Note: This problem does not equal 1, but its solution does.
If 25 men can build a house for 18 days how many days can 15 men built?
30 days.
12 men can build 5 houses in 75 days how long will 20 men take to build 7 such 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.
If it takes 50 men to build a house in 7 days how long would it take 10 men to built that?
35 days
If 5 men can build a wall in 8 days how many days will 3 men take to build the same wall?
1 wall = 5 men X 8 days = 40 man days 40 man days / 3 men = (40/3) days = 13 1/3 days
If 2 men build a wall in 6 days how long does it take 3 men to build a wall at the same rate?
4 days
18 men can build in 12 days how many men must be employed to build a similar wall in 9 days?
Suppose, the dimension of wall built by one man per day equals to W, and everyone has the same workload. Then, the dimension of wall built by 18 men in 12 days can be calculated as, 18*12*W=216W. We assume the number of men employed to build a similar wall in 9 days is M. So, 9MW=216W, rearrange the equation, we get M=24.
A contractor has to build a bridge in 50 days Initially he employed 20 men but found that only half of the work has been completed in 30 days How many more men he has to employ to finish the Jo?
10
12 men can build 5 houses in 75 days how long will 20 men take to build such houses?
Building 5 houses takes 12 x 75 ie 900 man-days. 20 men will thus take 900/20 ie 45 days.
If 5 man build 2 houses in 1 day. How many man will built 2 houses in 2 days?
2.5 men.
If 5 men took 20 days to build a fence how much days will 3 men take and 8 men take?
It takes 100 man-days, so three men would take 33 and a third days and 8 men 12½ days. Working together the 3 men and 8 men would take 100/11 or 9 and a ninth days
How many men did it take to build the step pyramid?
it took a couple thousand men to build the step pyramid.
How many men did it take to build castles?
14,000,000,000 men at the least.
