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
Ahat [919]
3 years ago
11

Pat has been assigned the job of picking apples from the family orchard. He could do the job alone in 8 hours. He knows that his

sister, Patti, could do the job in 7 hours. He begs her to help, and she agrees. How long will both of them take to pick the apples? (Round your answer to the nearest tenth.)
Mathematics
1 answer:
schepotkina [342]3 years ago
8 0

Answer:

3.7 hours

Step-by-step explanation:

Pat could do the job alone in 8 hours.

Patti could do the job alone in 7 hours

Output = Rate * time

Let the rate at which pat does the work = Rp

Let the rate at which Patti does the work = Rt

Let X be the total output

Rp * 8 = X

Rp = X/8

Rt * 7 = X

Rt = X/7

If both pat and Patti pick apples, we have

(Rp+Rt)T = X

(X/8 + X/7)T = X

[(7X + 8X)/56]T = X

[X(7+8)/56]T = X

Divide both sides by X

[(7+8)/56]T = 1

(15/56)T = 1

T = 56/15

T = 3.7 hours

You might be interested in
The rabbot population in a certian area is 200% of last years population there are 1100 rabbits this year how many were there la
Dahasolnce [82]

1100/2

=550

because 100% is 500 and 100% is last year's population

6 0
3 years ago
Sasha and Mona practiced swimming every day. They increased the number of minutes of swimming every week as described below:
vagabundo [1.1K]
D. Sasha's method is exponential because it increases by a fixed factor, and Mona's method is linear because it increases by a fixed number.

Hope this helps!~
4 0
3 years ago
Read 2 more answers
If the outliers are not included, what is the mean of the data set?
luda_lava [24]
The mean of the numbers is c. 67
3 0
3 years ago
Need help i have been stuck on this problem
liberstina [14]
The second one is correct
4 0
3 years ago
tanya purchased 4 hamners for $11.00 each and 7 scewdrivers for $6.65 each write an expresion for the total cost of the tools.th
rewona [7]
X=numbers of hammers
y=numbers of  scewdrivers
f(x,y)= total cost in $

f(x,y)=11x+6.65y

f(4,7)=4(11)+6.65(7)=44+46.55=90.55

Sol: an expresion for the total cost of the tools is f(x,y)=11x+6.65 y; 
x=number of hammers
y= number of  scewdrivers.
The total cost is $90.55
7 0
3 years ago
Read 2 more answers
Other questions:
  • HELP ILL MARK BRAINLEST
    11·1 answer
  • Points F(3, 3), K(6, 5), J(8, 2) and L(5, 0) lie in a coordinate plane. Which lines are parallel?
    15·1 answer
  • Order these numbers from least to greatest. -8 1/5, 8.23, -8 2/11, -8.212121212121...! Plz help me
    9·2 answers
  • What is Eight by the power of negative two
    5·2 answers
  • Suppose I have 6 shirts, 4 ties, and 3 pairs of pants. If an outfit requires a shirt and pants, and can either have a tie or not
    9·1 answer
  • the standard iq test is designed so that the mean is 100 and the standard deviation is 15 for the population of all adults. We w
    9·1 answer
  • Difference in length between 3 3/4 and 4 2/3
    12·1 answer
  • Solve the equation: 2 sqrt x-3-5 =1
    14·1 answer
  • Please help!
    9·1 answer
  • What is 6.42 written as a fraction in lowest terms?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!