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djverab [1.8K]
4 years ago
12

A tank can be filled by one pump in 50 minutes and by another pump in 60 minutes. A third pump can drain the tank in 75 minutes.

If all 3 pumps go into operation, how long will it take to fill the tank? help pls
Mathematics
1 answer:
Lubov Fominskaja [6]4 years ago
3 0
It sure take a hours to pump in the tank
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One gram of protein contains 4 calories. One gram of fat contains 9 calories. A snack has 60 calories from p grams of protein an
nikitadnepr [17]

Answer:

1.5 grams of protein.

Step-by-step explanation:

The equation that represents the relationship between protein and fat is as follows :

4p + 9f = 60 ....(1)

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Put f = 6 in the above equation (1).

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3 years ago
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Mila [183]
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4 0
3 years ago
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In a bag of keys, there are 12 silver keys, 5 black keys, 11 copper keys, and 2 painted keys of various colors. One key is drawn
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