Question

The number of students was The number of students was counted wrongly as 174 and hence there was a 13% decrease in the number
of students. Determine the actual number of students.
(A) 200
(B) 300
(C) 400
(E) 150
(D) 174

Answer 1

Answer :

The answer is

D) 174

step- by- step- explanation

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Answer 2

Answer:

(A) 200

Step-by-step explanation:

Let the total number of student in class be x

Now, due to wrong value there was a percentage decrease which means x > 174.

Thus the percentage error is calculate with a value

(Final Value - Initial Value) ÷ Initial Value  = Percentage Error

∴ In this case

(x-174)/x = 13/100

Solving the above equation gives the values of x = 200