Among 50 students, 10 are 4 feet tall, 20 are 4.5 feet tall, and 20 are 5 feet tall. What is the percentage of students with a height greater than 4 feet?​

Answers 2

Percentage of students with a height greater than 4 feet

Definition:

A percentage is a number or ratio expressed as s fraction of 100.

Step-by-step explanation:

There are total of 50 students,in which 10 are 4 feet which is not included in this case as we need to find the percentage of students with a height greater than 4 feet,so only 20 students who are 4.5 feet tall and 20 students who are 5 feet tall is considered

Number of students greater than 4 feet ,is found as

[tex]=20+20\\ =40[/tex]

Among 50 students ,only 40 students are greater than 4 feet tall,now express in percentage as follows,

[tex]=\frac{40}{50}*100\\ =40*2\\ =80 per cent[/tex]

Therefore,the percentage of students with height greater than 4 feet is 80%.

Given:

Total number of students = 50

Number of students who are 4 feet tall = 10

Number of students who are 4.5 feet tall = 20

Number of students who are 5 feet tall = 20

To Find:

Percentage of students with a height greater than 4 feet?

Solution:

Number of students greater than 4 feet -

= Students 4.5 feet tall + Students 5 feet tall

20 + 20

= 40

Among 50 students, only 40 students are greater than 4 feet tall.

Thus, expressed in % -

40/50 × 100

4 × 20

= 80

Answer: The percentage of students with a height greater than 4 feet is 80%.

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