The population of a city has decreased by 38% since it was last measured. If the current population is 27,900 .Previous population of city was 45000.

Solution:

Given that current population of city is 27900.

Also, population of a city has decreased by 38% since it was last measured.

Let assume that population of city when it was last measured = x

Decreased of 38% means x-38% of x . we can write this as,

$=x-\frac{38}{100} \times x$

$=\frac{100 x-38 x}{100}$

$=\frac{62 x}{100}=\frac{31 x}{50}$

So current population is $\frac{31 x}{50}$

Equating above expression to the given value of current population, we get

$\frac{31 x}{50}=27900$

$x=\frac{27900 \times 50}{31}$

x=45000

Hence previous population of city was 45000.

7 0

3 years ago

Find the area of the shape shown below. 12 5 5 units

Yanka [14]

Answer:

42.5 units²

Explenation:

The area of the square on the left is 5×5=25.

At the top you do 12-5=7 to find the length of the tringle.

Than it is 7×5=35 than this divided by two, so 17.5.

You add both areas 25+17.5=42.5

5 0

2 years ago

Read 2 more answers

Mr. Jackson plans to cover his entire kitchen floor with 1 square foot tiles and there will be no gaps between the tiles and the

Tju [1.3M]

There is not enough information given in what you have said to find the number of tiles. We need either the area or dimensions of the kitchen to find the information you are looking for.

8 0

2 years ago

The next model of sports cars will cost 6.3% less than the current model. The current model costs 55,000. How much will the pric

makvit [3.9K]

Answer:

The price will decrease $3,465

Step-by-step explanation:

55,000 x 0.937 = 51,535

51,535 - 55,000 = -3,465

5 0

2 years ago