1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Troyanec [42]
3 years ago
9

8 men will take 10 days to build a wall 150 metres long. After the men had started working for 6 days, they were told that the w

all needed to by lengthened by 45 metres. How many more men must be hired to complete the job on time?​
Mathematics
1 answer:
Mashutka [201]3 years ago
3 0
First, find out how much each man works. If eight men take 10 days to build 150 m of wall, then that means that it takes 80 man days to build 150 m. One Man day is then 150÷80, in other words 1.875. If eight men have already been working for six days, then they have spent 8×6 man days, 48. 48 men days times 1.875 m of wall per man day equals 90 m of wall have been built. So, you have four days left to build the remaining 60 m of wall as well as 45 extra meters, in other words, 105 m total. 105 m divided by four days equals 26.25 m need to be built every day. Since one man builds 1.875 m of wall every day, to find the number of men total you need for the last four days, take 26.25÷1.875, Which equals 14 exactly. 14 is not the answer however, because it’s asking how many more men you need. Since you already have eight, you need six more to make 14

The answer is six more men
You might be interested in
jenny had some candy to give to her three children she first took nine pieces for herself and then evenly divided the rest among
Airida [17]

Answer:18

Step-by-step explanation: She gave 3 children 3 pieces each. 3*3=9. She also took 9 pieces for herself. 9+9=18

3 0
3 years ago
How can i solve the following<br> 2(x + 3) = x - 4
julsineya [31]

Answer:

x=-10

Step-by-step explanation:

2(x+3)=x-4

2*x+2*3=x-4

2x+6=x-4

2x-x=-4-6

x=-10

4 0
3 years ago
Read 2 more answers
Can someone please help me figure out how to solve for x?​
Anna007 [38]

Answer:

x=30

Step-by-step explanation:

Both triangles in this figure are similar. Therefore, we can set up the following proportion:

\frac{21}{x}=\frac{14}{20}.

Cross-multiply to solve:

14x=21\cdot 20,\\x=\frac{21\cdot20}{14},\\x=\fbox{$30$}.

8 0
2 years ago
Giving brainlist to whoever answers
levacccp [35]
Answer. Is d. I’m guessing
6 0
2 years ago
Please help me, I am completely lost...
charle [14.2K]
5 is the answer, you are welcome.
8 0
3 years ago
Other questions:
  • in the sequence of numbers a3=0 a4=6 a5=12 a6=18 a7=24 based on this information which equation can be used on the nth term in t
    7·2 answers
  • How many times as large is the approximate radius of mercury atom, 1.5 x 10 meter, as the approximate radius of a hydrogen atom,
    15·1 answer
  • In a bag of 100 ballons, 12 are red and 13 are green. What fraction of the balloons in the bag are not red or green?
    6·1 answer
  • On Saturday, Lukas drove 4x – 5 miles. On Sunday, he drove 3x – 10 miles. What is the difference in miles driven?
    14·2 answers
  • The circumference of a circle is 75.36 cm. What is the area in square
    14·2 answers
  • THIS QUESTION IS WORTH 99 POINTS!!!<br><br> 10∧23 + cos(5.634) = ?
    8·2 answers
  • Which polynomial represents the sum below?
    12·1 answer
  • In the following cylinder shape, if the volume
    9·1 answer
  • Formula of volume of hemisphere and sphere​
    7·2 answers
  • Each package holds 72 markers:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!