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AfilCa [17]
3 years ago
10

A can do a piece of work in 4 hours and B can do it in 6 hours. How much time would they take working together to finish the wor

k?
Mathematics
2 answers:
Kipish [7]3 years ago
8 0

Answer:

2.4 hours

Step-by-step explanation:

Let total work = X

Rate of work done = X ÷ time

Rate of A = X/4

Rate of B = X/6

If they work together, rate is the sum of their individual rates, i.e.

X/4 + X/6

= (3X + 2X)/12 (taking LCM)

=5X/12

Rate = X/time

5X/12 = X/time

time = X÷(5X/12)

time = X × 12/(5X)

time = 2.4 hours

Shortcut:

Product of individual times/sum of individual times

= (4×6)/(4+6)

=24/10

=2.4 hours

Whitepunk [10]3 years ago
6 0

Answer:

5 hours

Step-by-step explanation:

A = 4hours

B= 6 hours

Average of A and B = (4hours+6hours)/2 = 5hours

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A washer and dryer cost a total of $960. The cost of the washer is three times the cost of the dryer. Find the cost of each item
xeze [42]

Cost of washer: $720

Cost of dryer: $240

I've taken this test before and got it right, so you're good :)

8 0
3 years ago
Express number 9 as a unit rate, you can also round
Katena32 [7]
125/200= 0.625 cents

0.625 cents to the nearest cent= 0.63

The unit rate is 0.63 miles.

Hope this helps!







6 0
3 years ago
Mia's checking account balance is overdrawn by $52.65.
Svetach [21]

Answer:

A

Step-by-step explanation:

So to start, Mia has an account that is overdrawn by $52.65 so her account is negative 52.65. She then adds 135.50 and used 24.30 so you would add 135.50 and 24.30 respectively. This would be (-52.65) + (132.50) - (24.30). This then would get you $58.55

8 0
2 years ago
Simplify 4/8 pls need help
Ganezh [65]
The answer is 1/2 (; do u need any more help?
5 0
2 years ago
Read 2 more answers
The slope of a line passing through H (-2, 5) is -3/4. Which ordered pair represents a point on this line?
oksano4ka [1.4K]
Answer:
(6,-1)

Explanation:
The slope of the line can be calculated using the following formula:
slope = \frac{y2-y1}{x2-x1}

We are given that:
slope = -0.75
point (x1,y1) is (-2,5)

We will use each of the given points to calculate the corresponding slope, then compare the calculated slope with the given one.

For point (6,-1):
slope = \frac{-1-5}{6--2} = -0.75 ........> accepted choice

For point (2,8):
slope = \frac{8-5}{2--2} = 0.75 ........> rejected choice

For point (-5,1):
slope = \frac{1-5}{-5--2} = 4/3 ........> rejected choice

For point (1,1):
slope = \frac{1-5}{1--2} = -4/3 ........> rejected choice

Therefore, the first option is the only correct one.

Hope this helps :)
5 0
2 years ago
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