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
Alina [70]
3 years ago
9

The first gardener can finish the job in 6 hours, and the second gardener can do the same job in 7 hours. How long it will take

them to finish the same job, if they work together?
Mathematics
1 answer:
marissa [1.9K]3 years ago
8 0

If the first gardener can finish the job in 6 hours, it means that every hour he completes 1/6 of the job.

By the same logic, the second gardener completes 1/7 of the job per hour.

So, if they work together, they complete

\dfrac{1}{6}+\dfrac{1}{7}=\dfrac{7+6}{42}=\dfrac{13}{42}

of the job per hour.

So, after 42/13 of a hour, they'll complete the job. Since one hour is made of 60 minutes, 42/13 of a hour is

\dfrac{42}{13}\cdot 60 \approx 194

So, it will take them about 194 minutes to finish the job, i.e. about 3 hours and 14 minutes.

You might be interested in
A circular cake with a radius of 8 inches is cut from the center into 6 equal pieces. How many inches wide, to the nearest tenth
aalyn [17]

Answer: 8.4 inches.

Step-by-step explanation:

We know that the circumference of a circle can be calculated with this formula:

C=2\pi r

Where "r" is the radius of the circle.

We know that the circular cake (whose radius is 8 inches) is cut from the center into 6 equal pieces. Then, you need to divide the circumference of this circular cake by 6 to find the width of the outer edge of each piece of cake.

Therefore, this is (to the nearest tenth of an inch):

C=\frac{2\pi (8in)}{6}\\\\C=8.4in

5 0
3 years ago
Read 2 more answers
Solve using a2 + b2 = c2 <br> show ur work please :)
Brrunno [24]
So 90^2+90^2=c^2
8100+8100=c^2
16200=c^2
C= ~127.28
5 0
3 years ago
A machine produces 440 bolts in 48 minutes. At the same rate, how many bolts would be produced in 30 minutes
umka2103 [35]

Answer:

it is your answer..... if it is helpful plzz like and comment

8 0
3 years ago
Read 2 more answers
A store is instructed by corporate headquarters to put a markup of 25​% on all items. An item costing ​$24 is displayed by the s
larisa [96]

Answer: The correct selling price is $29.97.

Step-by-step explanation:

Since we have given that

Cost price of an item = $27

Mark up rate = 11%

So, Amount of mark up would be

So, Amount after mark up would be

Hence, the correct selling price is $29.97.

The manager's likely error is that he has put the selling price the mark up amount only i.e $2.9≈$3 instead of adding the mark up amount to the cost price.

5 0
3 years ago
Read 2 more answers
PLEASE HELP! Here's my word problem; A rectangular riding arena is 45 meters long. The stables are 10 meters wide and 26.6 meter
Pavlova-9 [17]

Answer:

38

Step-by-step explanation:

fggfhghghj

7 0
3 years ago
Other questions:
  • NEED HELP. HOW DO I DO THIS,?? SHOW WORK PLEASE
    12·1 answer
  • A recursive rule for a geometric sequence is a1=8;an=34an−1.
    12·2 answers
  • What is the value of the 4 in 475
    12·1 answer
  • In sm.smiths class 75% of the students are girls.there are 18 girls in the class.what is the total number of students in ms.mith
    14·2 answers
  • Choose all that apply please. WILL MARK THE BRAINLIEST
    12·1 answer
  • Determine if the ratios are proportional. 4/5 and 15/20
    10·1 answer
  • Geometry the height is always the straight or diagonal line
    14·2 answers
  • if a surface cleaner is used at a rate of half a bottle per month, and the supply lasted 16 months, how many bottles of surface
    10·2 answers
  • Anyone wanna r p on pad let im bor ed
    9·1 answer
  • Q1) find 80% of £120<br> q2) find 60% of £980<br> PLease show working thank uh
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!