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
aliya0001 [1]
3 years ago
9

Mike can plow a field in 12 hours and his brother Phil can plow it in 15 hours. How long will it take them to plow it if they us

e two plows and work together?
Mathematics
1 answer:
Korvikt [17]3 years ago
5 0

Answer:

6.66 hours, that is, 6 hours and 40 minutes.

Step-by-step explanation:

If Mike can plow a field in 12 hours, we plows 1/12 of the field each hour.

If Phil can plow a field in 15 hours, we plows 1/15 of the field each hour.

So if they are working together, they can plow (1/12) + (1/15) of the field each hour, that is:

(1/12) + (1/15) = (5 + 4) / 60 = 9 / 60 = 3 / 20 = 1 / 6.66

So if they work together, they can plow the field in 6.66 hours, that is, 6 hours and 40 minutes.

You might be interested in
How I do 4 boxes that weighed total of 34 kilograms if each box had the same amount
Blizzard [7]
Each box would have exactly 8.5 kilograms each in them. Hope this helps mate =)

4 0
3 years ago
Read 2 more answers
What is the volume of a rectangular prism with a height of 6 m, a length of 4 m, and a width of 2 m?
Debora [2.8K]

Answer:

48m

Step-by-step explanation:

Formula: lwh

4*2*6=48m

6 0
2 years ago
PLEASE HELP GIVE BRANLIEST!!
Ipatiy [6.2K]

Answer:

1. 2/25

2. 4/15

Step-by-step explanation:

1. P(Y∩X)

Since  P(X) =2/3 , P(Y) =2/5 , and P(X|Y) =1/5, this is a conditional probability.

So  P(Y∩X) = P(Y)P(X|Y) = 2/5 × 1/5 = 2/25

2. P(Y)· P(X)

P(Y)· P(X) = 2/3 × 2/5 = 4/15

7 0
3 years ago
The frequency table shows the scores from rolling a dice.
Tatiana [17]
The answer is 3 (or 3.08)
5 0
3 years ago
Read 2 more answers
Small library contains 700 novels. how many ways can You check out three novels
schepotkina [342]

The first book you select can be any one of 700.

. . . For each of those ...

The second book can be any one of the other 699.

. . . For each of those ...

The third book can be any one of the remining 698.

The total number of ways to gather three books from the shelves into your hands is  (700 · 699 · 698)  =  <em>341,531,400 ways</em> .

<em>BUT ...</em>

When you bring three books to the check-out counter, Marian the Librarian doesn't know in which order you took them down off the shelves.  You could have gathered the same three books in (3 · 2 · 1) = 6 different ways.

So, even though there are 341,531,400 ways to<em> </em>gather up three books, there are only (341,531,400 / 6) = 56,921,900 different GROUPS of three books that you can choose to take home.

8 0
3 years ago
Other questions:
  • Find the median, Q1, Q3, interquartile range (IQR), and list any outliers. 2) 74, 63, 69, 62, 33, 79, 70, 60, 107, 119
    7·1 answer
  • Convert two third feet into inches
    14·1 answer
  • I really need help (the picture of the problem is attached, you must zoom out)
    5·1 answer
  • A 16 oz package of brown rice costs 79 cents and 32 oz package of white rice costs 3.49 which package is a better deal and why
    7·1 answer
  • during a hoagie sale fundraiser a ski club sold 42 Italian hoagies and 53 roasted beef Hoagies what is the ratio of Italian hoag
    10·1 answer
  • What is the answer? 12+(7+m)=30
    15·2 answers
  • The components of vector are ax and ay (both positive), and the angle that it makes with respect to the positive x axis is θ. Fi
    7·1 answer
  • Can someone help? 25 points
    9·2 answers
  • What's the variable of 23x4=c
    9·1 answer
  • SOMEONE PLEASE HELP ME WITH THIS!!!!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!