MATHEMATICS HIGH SCHOOL

5. A school has 800 students. 40% of the students are girls. Find the number of boys [Think : 60% are boys]​

Answers

Answer 1
Answer:

Final answer:

A school has 800 students. 40% of the students are girls, the number of boys is 480.

Explanation:

To find the number of boys in the school, we can use the fact that 100% of the students minus the percentage of girls will give us the percentage of boys. In this case, if 40% of the students are girls, then 100% - 40% = 60% of the students are boys.

Now, we can calculate the number of boys:

Step 1: Calculate 60% of the total number of students (800).

60% of 800 = (60/100) * 800 = 0.6 * 800 = 480

So, 480 students are boys.

Therefore, in a school with 800 students, where 40% are girls, there are 480 boys.

Learn more about Percentage here:

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Answer 2
Answer:

Answer:

A school has 800 students. 40% of the students are girls.

number girls : (800*40)/100=320

Find the number of boys

800-320=480

we ask for the number of boys not the %

or as you wrote 60% boys = (800*60)/100 =480

Step-by-step explanation:

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Answers

Since it is a right angled triangle.

tan x = 14.1/19.1

tan x ≈ 0.7382

x ≈ tan⁻¹(0.7382)    use a calculator.

x ≈ 36.4°

Since x and y are adjacent angles of right angled triangle.

x + y = 90°

x = 90° - 36.4°

x = 53.6°

y - x ≈ 53.6° - 36.4°

y - x ≈ 17.2°

Option D.
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Answers