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
lys-0071 [83]
3 years ago
14

a can do.a piece of work in 6 days and B in 8 days each working 7hours a day In what time will they finish it together, working

8hrs a day
Mathematics
1 answer:
Irina-Kira [14]3 years ago
6 0
<h2>A can complete the work in 7*6 hrs = 42 hrs. </h2><h2> </h2><h2>A can complete in 1 hr = 1/42 part. </h2><h2> </h2><h2>B can complete the work in 7*8 hr = 56 hrs. </h2><h2> </h2><h2>A&B together do in 1 hr = 1/42 + 1/56 = 7/168 = 1/24 part. So they will do in 8 hrs = 8*1/24 = 1/3 part. </h2><h2> </h2><h2>Hence they need 1÷1/3 = 3 days to complete the work.</h2>

You might be interested in
What is the sum of the probability of drawing a green marble and the probability of not drawing a green marble?
andrey2020 [161]

Yo sup??

the answer is 1 because

P(E)+P(E')=1

where E is the event and

E' is the complement of the event

Hope this helps

3 0
3 years ago
Steps for solving 3x + 18 = 54 are shown.
Lostsunrise [7]

C

By subtracting 18 to both sides you are separating the 3x because you are not ready to isolate the variable (x) in step 1

7 0
3 years ago
PLEASEEEEEE HELP ME OUT
Alexandra [31]

Answer:

x = 135(being  \: opposite \: angles \: of \: a \: paralleogram)

Step-by-step explanation:

x =135(being opposite angles of a parallelogram)

3 0
2 years ago
What is 45% of 8.5 ?
satela [25.4K]

Answer:

3.825

Step-by-step explanation:

First, you have to move the decimal two over on 45%. If you move the decimal over two spaces to the right, it would be 0.45. In math, of means to multiply, so then you multiply 0.45 and 8.5 to get your answer of 3.825.

7 0
3 years ago
the cost of a phone call lasting 3 minutes 30 seconds was 52.5 cents . at this rate what was the cost of a call lasting 5 minute
Effectus [21]

Answer:

80 cents

Step-by-step explanation:

The easiest place to start for this is to calculate how much it costs per minute of call time. To do this, if we know that it costs 52.5 cents to call for 3.5 minutes, we can divide those two numbers to get how much it costs per minute.

52.5/3.5 = 15

If it costs 15 cents per minute, and we want to know how much it would cost to call for 5.33 (5 and 1/3 of a minute), then we multiply our 15 cents a minute by the number of minutes to get the final cost.

15 x 5.33 = 79.99

Because we can't have 99/100 cents, rounding up to 80 is important to get a proper answer.

6 0
3 years ago
Other questions:
  • You have 12 cups of granola and 8 1/2 cups of peanuts to make trail mix. What is the greatest number of full batches of trail mi
    15·1 answer
  • During what month do people sleep the least?​ Will mark brainliest for the correct answer!!!
    7·2 answers
  • I know it’s late but is anybody here
    14·2 answers
  • How do I Simplify 4a – 7b + 2ab – a + b (I need step by step cause I'm trying to learn this)
    8·1 answer
  • Which graph shows a system with an infinite number of solutions?
    14·2 answers
  • # 2 Find the missing side, Round to the nearest tenth.
    14·1 answer
  • PLS HELP I suck at mathematics and it's due today!!! I'll make BRAINLEIST​
    8·2 answers
  • Help me plz ok thank you
    7·2 answers
  • How do I find angle Y
    15·1 answer
  • Using a compass, construct an accurate copy of triangle DEF. Check that EF = 4.6 cm. ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!