Question

Last month, the barn had 30 horses. This month there are 25 horses. Find the percent decrease from last month to this month.

As a reminder, you may use your notes to complete this but ​you must show all of your work​.

This is a percent problem

Answer 1

Answer:1.2%

Step-by-step explanation:

Answer 2

SOLUTION

GIVEN

Last month, the barn had 30 horses. This month there are 25 horses.

TO DETERMINE

The percentage of decrease from last month to this month.

CONCEPT TO BE IMPLEMENTED

Percentage

In study mathematics the term percentage is used. It is denoted by the symbol %

The percentage is a number or ratio which is expressed as a fraction of 100.

PROCESS

In order to calculate percentage we divide the number by whole and multiply by 100

EVALUATION

Here it is given that Last month, the barn had 30 horses.

This month there are 25 horses.

So the number of horses decrease

= 30 - 25

= 5

Hence the required percentage of decrease from last month to this month

$\displaystyle \sf{ = \frac{5}{30} \times 100 \% }$

$\displaystyle \sf{ = \frac{1}{6} \times 100 \% }$

$\displaystyle \sf{ = \frac{100}{6} \: \% }$

$\displaystyle \sf{ = \frac{50}{3} \% }$

$\displaystyle \sf{ = 16 \frac{2}{3} \% }$

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