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inysia [295]
2 years ago
6

3000 exercise books are arranged into 3 piles. The first pile has 10 more books than the second pile. The number of books in the

second pike is twice the number of books in the third pile. How many books are there in the third pile.
Mathematics
1 answer:
pochemuha2 years ago
7 0

Answer:

598 books

Step-by-step explanation:

Let x be the number of books in the 3rd pile. We will have then:

1st pile: 2x + 10

2nd pile: 2x

3rd pile: x

3000 = (2x + 10) + (2x) + (x)

3000 = 5x + 10

3000 - 10 = 5x

2990 = 5x

2990/5 = x

x = 598 books in the third pile!

We can check that:

3000 = 2*598 + 10 + 2*598 + 598

3000 = 1196 + 10 + 1196 + 598

3000 = 3000 CHECK!

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Which of the following numbers is a rational but not a integer
Temka [501]
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Integers are whole numbers. They can be negative or positive. 

Numbers such as 0.10 are rational because they can be turned into a fraction
0.10 = 1/10....and since it is not a whole number, it is not an integer.
8 0
3 years ago
Simplify.<br> 8^15 : 8^-3<br> asap please
torisob [31]

Answer:

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Step-by-step explanation:

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3 0
2 years ago
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Holly and her 2 brst friends go to dinner. Their total bill is 31.84. They use a coupon for 15% off the total. If they split the
Tresset [83]
ANSWER:

$9.0.

Each person will owe $9.0.

STEP-BY-STEP SOLUTION:

Total amount of people:
= 3

Total bill:
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Discount off total bill:
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Total bill after discount:
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6 0
3 years ago
Kelly earns $178.50 in interest on an account that earns simple interest at a rate of 4%. If she kept the money in the account f
Otrada [13]

Answer:

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Step-by-step explanation:

The amount of interest earned is given by ...

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Filling in the given values, we have ...

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Dividing by 0.20 gives ...

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The principal amount in Kelly's account is $892.50.

7 0
2 years ago
There are between 60 and 100 children at the sunny side holiday camp. When the children are put into pairs, there is 1 child lef
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Answer:

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8 0
2 years ago
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