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
Anna [14]
3 years ago
8

Nakita recorded a video of homecoming highlights of the senior class and now everybody wants a copy. She promised to have 25 rea

dy the next day but suddenly realized that it will take her ten hours to do that. Her friend, Abby, volunteered to help and she can do the job alone in 15 hours. How long will it take the girls, working together, to complete the job?
Mathematics
1 answer:
Simora [160]3 years ago
5 0

Answer: 6hours

Step-by-step explanation:

it will take Nakita 10 hours to get 25 copies of the video ready

Then it takes Nakita 25/10 per hour to get 25 copies ready

it will take Abby 15 hours to get 25 copies of the video ready

Then it takes Abby 25/15 per hour to get 25 copies ready

It is assumed that they are working individually and simultaneously. This means their work rate is additive.

Their combined work rate per hour is

25/10 + 25/15 = 5/2 +5/3

=25/6 per hour

Let x hours be the time it will take them to get 25 videos ready.

It will take them 25/x per hour to get the videos ready

Equating both expressions,

25/x =25/6

25 × x = 25 × 6

x = 6 hours

You might be interested in
What is the coressponding mean
Katen [24]
Analogous or equivalent in character, form, or function; comparable.

I hope that this answer helps you.
6 0
2 years ago
Read 2 more answers
Alessialol I will add you back on snap and um I forgot y password to my other acc. so ya and whats the google classroom code?
True [87]

um ok.........................

5 0
3 years ago
(845,230) +-834 -0.4556=
Levart [38]
<span>(845,230) +-834 -0.4556= </span>844395.5444

7 0
3 years ago
Read 2 more answers
You have a piggy bank made of only dimes and quarters. There are 42 coins and their value is $6.75. How many dimes and quarters
babunello [35]
There are 23 quarters and 19 dimes
7 0
3 years ago
In point slope form: passes through (1, -3), slope = -1?​
sleet_krkn [62]

Answer:

y + 3 = -1(x-1)

Step-by-step explanation:

sub (1, -3) and slope = -1:

y - (-3) = -1(x - 1)

Topic: Coordinate Geometry

If you would like to venture further, you can check out my Instagram page (learntionary) where I post notes and mathematics tips. Thanks!

5 0
3 years ago
Other questions:
  • A is a common factor of 72 and 108
    11·2 answers
  • During a sale, $2 bars of soap were sold at the rate of 3 for 5$. how much is saved on the 9 bars
    9·1 answer
  • If c = 4 and d = 5, find c:d.<br><br> 1:5<br> 4:5<br> 5:4
    5·2 answers
  • Find the quotient.<br><br> 48 ÷ -6 =
    8·1 answer
  • An experimenter is studying the effects of temperature, pressure, and type of catalyst on yield from a certain chemical reaction
    11·1 answer
  • Hello can anyone help me ? here the question
    5·1 answer
  • REAL ANSWERS ONLY
    14·1 answer
  • Without using a calculator find the answers to the following. <br> (5+2) x 6-6
    9·2 answers
  • I really need help with this please!
    11·1 answer
  • Part B The mass of an average grain of rock salt is about 40 times the mass of an average grain of table salt. If you multiply t
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!