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lisabon 2012 [21]
3 years ago
8

The price of a flight was increased by 3% to £650. What was the price before the increase?

Mathematics
1 answer:
liubo4ka [24]3 years ago
8 0

Answer:

£ 631

Step-by-step explanation:

Hi this is a simple mathematics issue.

First, let's imagine what is 3%. '3 percents' means 3/100. If your family have 100 apples and you have 3 apples, that means you have 3% of your family apples.

Now, get back to this problem. We need to find the price before increase. Let's say the price was £ X. Now we will find the X number.

It's said that the price was increased by 3%. That means they took 3% of X and added that amount to X to have the new price : £ 650. That means we have this equation :

650 = X + 3%×X

Let's make it easier to look :

650 = X + 3/100 ×X

650 = X×( 1+ 3/100)

= X × 103/100

So we can see 650 is equaled to X multipled by 103/100.

To find the correct answer, simply divide 650 by 103/100.

*A hint: When you divide a number by a fraction, you can simply put the number multiplied by the "flipped" fraction .

Hope you learn with Joy and High Grades !!!

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Did the population of Town C increase by at least 100 percent from the year 2000 to the year 2010 ? The population of Town C in
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Yes, the population of Town C increased by at least 100 percent from the year 2000 to the year 2010

<u>Statement 1:</u> The population of Town C in 2000 was 2/3 of the population in 2005

This tells us the population change from 2000 to 2005 since we need to know the population change from 2000 to 2010, this statement is not sufficient.

<u>Statement 2: </u>The population of Town C increased by a greater number of people from 2005 to 2010 than it did from 2000 to 2005.

Since statement 2 provides no information about the population change from 2000 to 2005, there is no to answer this question with certainty. thus, statement 2 is not sufficient

<u>Statement 1 and Statement 2 combined:</u>

Let X= the population in 2000

Let Y= the population in 2005

Let Z= the population in 2010

From statement 1, we can write: X=\frac{2}{3}Y

Multiply both sides by 3 to get 3X=2Y

Divide both sides by 2 to get \frac{3}{2}X=Y

=>Y=1.5X

As per statement 2, let's first determine the increase in the number of people from 2000 to 2005

If Y=1.5X, we know

X= the population in 2000

1.5X= the population in 2005

1.5X-X=0.5X

So, the population increased  0.5X from 2000 to 2005

So,  from 2005 to 2010, the population increased at least 0.5X

1.5X= the population in 2005

1.5X+0.5X=2.0X

So, the population in 2010 was at least 2.0X

In other words, the population at least doubled from 2000 to 2010

So, the answer to the target question is yes, the population of Town C increased by at least 100 percent from the year 2000 to the year 2010

Did the population of Town C increase by at least 100 percent from the year 2000 to the year 2010?

(1) The population of Town C in 2000 was 2/3 of the population in 2005.

(2) The population of Town C increased by a greater number of people from 2005 to 2010 than it did from 2000 to 2005.

Learn more about population here brainly.com/question/16788694

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Step-by-step explanation:

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see explanation

Step-by-step explanation:

∠1 and 170° form a straight angle and are supplementary, thus

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∠1 and ∠3 are vertical angles and congruent , thus

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