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Lerok [7]
3 years ago
15

Alicia can paint a small room 21 hours faster than Nina aloneness 4 hours slower than Alicia and Nina together. How long will it

take them to paint the room together? Express your answer in decimal form
Mathematics
1 answer:
Alexeev081 [22]3 years ago
7 0

Answer:

11.413 Hours.

Step-by-step explanation:

Alicia can paint a house in 21 hours; Which means in 1 hour she can paint 1/24 of the house.

Nina can paint the same house in (21+4)  hours. Which means in 1 hour she can paint 1/25 of the house.

Together in 1 hour they can paint:  1/21 + 1/25 = 46/525 of the house.

Total Hours for painting the house together will be 525/46 = 11.413 Hours.

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5 0
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"More than 60% of the students scored below the mean on the last test." Can this statement be true? Why or why not?
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4 years ago
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