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OLEGan [10]
3 years ago
9

Question 7 of 10

Mathematics
2 answers:
exis [7]3 years ago
7 0

Answer:

Huh...?

Step-by-step explanation:

White raven [17]3 years ago
7 0

Answer:

Need to know the fraction

Step-by-step explanation:

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If 3 workers can paint a room in 2 hours, then approximately how long does it take 4 workers to paint the same room? Assume the
Olin [163]

It takes 1.5 hours for 4 workers to paint the same room

<em><u>Solution:</u></em>

Given that 3 workers can paint a room in 2 hours

To find: Time taken for 4 workers to paint the same room

Assume the time needed to paint the room is inversely proportional to the number of worker

time $ \propto \frac{1}{\text { number of workers }}\\\\time =k \times \frac{1}{\text { number of workers }}

Where, "k" is the constant of proportionality

<em><u>3 workers can paint a room in 2 hours</u></em>

Substitute number of workers = 3 and time = 2 hours

time =k \times \frac{1}{\text { number of workers }}\\\\2 = k \times \frac{1}{3}\\\\k = 6

Therefore,

\text {time}=6 \times \frac{1}{\text { number of workers }}

To find time taken for 4 workers to paint the same room, substitute number of workers = 4 in above expression

time = 6 \times \frac{1}{4} = 1.5

Thus it takes 1.5 hours for 4 workers to paint the same room

6 0
3 years ago
Read 2 more answers
I do not know how to do this.
Nonamiya [84]

Answer:

Step-by-step explanation:

(a) Option B cost less at 120 miles driven

The cost difference at 120 miles between option A and option B is $15

(b) Option A and B cost the same at driving 60 miles.

Option B would cost more if you drive less than 60 miles.

6 0
2 years ago
I need helppp pleasee
gogolik [260]
50p=c
So $50 x the number of people = the price in dollars
So for 11 people it would cost $550
I hope this helped :)
8 0
2 years ago
At the beginning of the year, 40% of the students at the art club were boys. In the middle of the year, 25% of the girls left bu
borishaifa [10]

Answer:

hi looks good

Step-by-step explanation:

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8 0
3 years ago
A salesman makes 5% commission on sales. what is his commission on $4,321 worth of sales? 216.05 2,160.50 8,642.00 86,420.00
Free_Kalibri [48]
216.05 is the answer because you have to divide $4,321 by 100, and multiply that by 5.
6 0
3 years ago
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