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3 years ago

Cynthia can wallpaper a room in 4 hours and her brother can do it in 6 hours. How long would it take them if they work together

Mathematics

1 answer:

Debora [2.8K]3 years ago

3 0

Answer:

2 hours and 24 minutes

Step-by-step explanation:

cynthia can wallpaper a room 4 hours with means in 1 hour she can wallpaper 1/4th of the room, her brother can wallpaper the same room in 6 hours so I'm 1 hour he can wallpaper 1/6 of the room.

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lakkis [162]

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2 years ago

Read 2 more answers

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DochEvi [55]

Step-by-step explanation:

A....

Solution ,

$= \frac{h - 3}{3} = 3h \\$

$= h - 3 = 9h$

$= h - 3 - 9h = 0$

$= h - 9h = 3$

$= - 8h = 3$

Change the sign of both side

$= 8h = - 3$

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B....

Solution,

$= \frac{t}{2} = \frac{t + 1}{5} \\$

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2 years ago

What is the value of |y|+4- y* x if x = 7 and y = -2?

irga5000 [103]

The given expression is

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1 year ago

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Anna [14]

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