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
lisov135 [29]
3 years ago
12

Maria, an experienced shipping clerk, can fill a certain order in 9 hours. Jim, a new clerk, needs 11 hours to do the same job.

Working together, how long will it take them to fill the order
Mathematics
1 answer:
tester [92]3 years ago
3 0

Answer:

4 19/20 hours or 4 hours , 57 minutes

Step-by-step explanation:

Given

In 9 hours Maria can fill a certain order let Say X

In 9/9 hours Maria can fill   X/9 of the order

in 1 hour Maria can fill   X/9 of the order

__________________________________

In 11 hours Jim can fill a certain order let Say X

In 11/11 hours Maria can fill   X/11 of the order

in 1 hour Maria can fill   X/11 of the order

_____________________________________________

Therefore total order filled by them in one hour will sum of individual work done by them in one hour.

Mathematically,

total order filled by Jim and maria in one hour = work done by Jim in one + work done by Maria in one hour

total order filled by Jim and maria in one hour = 1/11 + 1/9

=> 1/11 + 1/9 \\=> (9 + 11)/11*9\\=> 20/99

=>20/99 of certain order is filled by both of them in one hour.

=>Total order is one. Hence, to get 1 from 20/99 we need to multiply it with its reciprocal (i.e 99/20) as 20/99 *99/20 = 1

now

=>20/99 of certain order is filled by both of them in 1 hour.

=>multiplying both order and hour with 99/20 we have

20/99 *99/20 of certain order is filled by both of them in 1* 99/20 hour

Thus total order is filled by them in 99/20 hours = 4 19/20 hours.

1 hour has 60 minutes

so 19/20 has 60*19/20 minutes = 57 minutes.

Working together, Jim and Maria   will  take 4 hours , 57 minutes  to fill the order.

You might be interested in
Giving brainlyist to the first person to answer correctly and having a complete answer.
Brums [2.3K]

Answer:

25

Step-by-step explanation:

2400 dived by 96 is 25

5 0
2 years ago
Question 7 of 10
Varvara68 [4.7K]

Answer:

b

Step-by-step explanation:

3 0
3 years ago
Elena is 56 inches tall. (Note: 100 inches = 254 centimeters)
Olenka [21]

Elena's height in centimeters is 142.24 cm.

Elena's height in meters is 1.42 meters.

<h3>What is Elena's height in centimeters and meters?</h3>

The mathematical operations that would be used to determine the answers ae division and multiplication.

Division is the process of grouping a number into equal parts using another number. The sign used to denote division is ÷. Multiplication is the operation that is used to determine the product of two or more numbers.

In order to determine the height in centimeters, first determine how many cenitmeters make 1 inch

1 inch = 254 / 100

1 inch = 2.54 cm

Now, convert 56 inches to cm : 56 inches x 2.54 = 142.24 cm

In order to determine the height in meters, first find the unit of conversion of inches to meters

1 inch = 0.0254 meters

0.0254 x 56 = 1.42 meters

To learn more about division, please check: brainly.com/question/13281206

#SPJ1

4 0
2 years ago
Nathan bought a pair of boots for $79.95 and 2 shirts for $19.99 each. The sales tax is 7.5%. How much did Nathan pay for all th
kodGreya [7K]
He pays 119.93$ but including tax he pays 128.92$ With the tax being 8.99$
5 0
3 years ago
Three eighths of the students in a class of 32 students are boys. How many students are boys?
nata0808 [166]
12 because 1/8 is 4 4x3= 12
4 0
3 years ago
Read 2 more answers
Other questions:
  • Andre is running in an 80-meter hurdle race. There are 8 equally-spaced hurdles
    6·1 answer
  • I WILL GIVE BRAINLIEST AND 10 POINTS PLEASE HELP FAST!!!!!Solve the equation using inverse operations. Check your solutions. In
    6·1 answer
  • Please explain, I don't understand why.
    8·1 answer
  • There is a café at the park.
    11·1 answer
  • Bob Woodward and Carl Bernstein were Washington Post journalists whose reports during the Watergate affair led to the resignatio
    14·2 answers
  • Please help guys Describe constant rate of change.
    11·2 answers
  • 17 + 15 / 3 - 2⁴ and 12⁰ + 3 x 4 - 5¹
    14·2 answers
  • The line models the cost of renting a bike. It costs​ $2 per hour plus a​ $4 deposit. Write an equation in​ slope-intercept form
    9·1 answer
  • What is the sum of 7x/ x^2 - 4 and 2 / x + 2?
    10·1 answer
  • Select the correct answer from each drop-down menu.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!