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2 years ago

Translate into an algebraic expression: 22 decreased by y%

Mathematics

2 answers:

nekit [7.7K]2 years ago

8 0

We have to decrease 22 by y%.

First we need to calculate what is y% of 22. y% of 22 simply means y% into 22 i.e.

y% x 22

= 0.01(y) x 22

= 0.22y

So 0.22 y is the y% of 22. Now we have to decrease 22 by its y% which becomes:

22 - y% of 22

= 22 - 0.22y

This expression can also be written as:

22 ( 1 - 0.01y)

Nostrana [21]2 years ago

8 0

Decreased = y% of 22 = y/100 x 22 = 0.22y

After decreased = 22 - 0.22y

Answer: 22 - 0.22y

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Answer:

The number of children attending = 324

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Step-by-step explanation:

Here, the total number of people attending = 500

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So, the number of adults attending the breakfast = 500 - m

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So, the cost of m children's tickets = m x ( Cost of 1 children ticket)

= m x ( $12.95) = 12.95 m .... (1)

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So, the cost of (500 -m) adults's tickets

= (500 - m) x ( Cost of 1 adult ticket) = (500 -m) x ( $17.95)

= 8,975 - 17.95 m .... (2)

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So, The earning from ( Adult's + children's tickets) = $7355

⇒ 12.95 m + 8,975 - 17.95 m = $7355

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or, m = 1620/5 = 324

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