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3 years ago

How much alfalfa does Helmut need to add to 30L of ostrich pellets to make a feed mix that is 40% alfalfa by volume?

Mathematics

1 answer:

Nutka1998 [239]3 years ago

8 0

Answer:

a = 20 . . . . liters

Step-by-step explanation:

To solve this, multiply the equation by 30+a:

a = 0.4(30 +a)

a = 12 + 0.4a . . . . . eliminate parentheses

0.6a = 12 . . . . . . . . subtract 0.4a

a = 12/0.6 = 20 . . . divide by the coefficient of a

20 L of alfalfa must be added

_____

<em>Check</em>

20/(30+20) = 20/50 = 40/100 = 0.4 . . . . . . answer checks OK

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Read 2 more answers

What is the simplified form of the following expression? 2√27+√12-3√3-2√12

LiRa [457]

Answer:

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Step-by-step explanation:

The given expression to be simplified is

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$2\sqrt{12}=2\times2\sqrt{3}=4 \sqrt{3}$

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