Question

In a class 80 students passed and the rest failed.If 80%of the students failed, find the number of students in the class​

Answer 1

Answer:

80% of the students are failed that mean 20% of students passed. 80 students passed means 400 students in the class. so that the answer is 400 students in the class.

Step-by-step explanation:

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Answer 2

Answer:

total students = x

passed = 80

failed = x - 80

failed% = 80%

now

((x - 80)÷x) × 100 = 80

(x-80)÷x = 8÷10

x-80 = (4÷5)×x

5x - 400 = 4x

x = 400

total students = 400

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