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Anna11 [10]
3 years ago
11

John can clear a lot in 1.5 hours. His partner can do the same job in 4.5 hours. How long will it take them to clear the lot wor

king together?
Mathematics
1 answer:
Crank3 years ago
4 0

Answer:

1 hour and 7.5 minutes

Step-by-step explanation:

We have the following information:

Jose makes 1 / 1.5 of the job per hour. It is his rate of work in addition to that the partner makes 1 / 4.5 of the job per hour. It is his rate of work.

Thus:

1 / 1.5 + 1 / 4.5 = 1 / x

0.8898 = 1 / x

x = 1 / 0.8888

x = 1.125

Hence, it will take 1 hour and 7.5 minutes for them to complete the job working together.

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3 years ago
On Friday, there were x students at the baseball game. On Monday, there were half as many students at the game as there were on
gayaneshka [121]

Answer:

2\frac{1}{2}x - 32

Step-by-step explanation:

On Friday, there were x students at the baseball game.

On Monday, there were 1/2 as many students, that is: x/2 students

On Wednesday, there were 32 fewer students at the game as there were on Friday, that is x - 32.

Tickets are sold for each student. Therefore, the number of tickets sold on all three days will be the same as the number of students that were at the games on the three days.

The number of students present on the three days is:

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= 2x + \frac{1}{2}x - 32\\ \\= 2\frac{1}{2}x - 32

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3 years ago
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==> Any number that you can WRITE DOWN COMPLETELY using digits (plus a decimal point or a fraction bar if you need them) is a rational number.

If " 4.126532 " is the whole thing, you sure nuff wrote it down, so it's rational.

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