Question

When 2/5 of the class are absent, there are 18 pupils present. What is the total number of pupils in the class

Answer 1

Answer:

Thanks for your question...

Your required answer :

• $\frac{2x}{5 } = 18$
• 2x = 90
• x = 45°

Therefore total pupils in class are 45°

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Answer 2

Step-by-step explanation:

Given:

2/5 of class absent => 3/5 of class present

18 students present

Find:

Total number of pupils (i.e. sum of students absent and present).

Therefore:

3/5 of the total class is 18 or

3/5t = 18 => 5/3(3/5)t = 18(5/3) removing fractions

t = 6(5) = 30 students

Answer: 30 students

Check: present = 18 + 12 = absent, total 18 + 12 = 30 students. - OK.

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