Question

A company manufactures CD drives that have a 1.6% chance of experiencing disc-read errors. If a CD drive is tested for 250 read operations, the number of times it may fail is ? .

Answer 1

1.6% of 250 = (1.6  *250) / 100  =  4 times

Answer 2

The number of times CD drives may fail are 4 .

Explanation:

Formula

`Percentage = (Part\ values* 100)/(Total\ value)`

As given

A company manufactures CD drives that have a 1.6% chance of experiencing disc-read errors.

If a CD drive is tested for 250 read operations .

Percentage = 1.6 %

Total value = 250

Put all the values in the formula

`1.6= (Part\ values* 100)/(250)`

`Part\ value= (1.6* 250)/(100)`

`Part\ value= (400)/(100)`

Part value = 4

Therefore the number of times CD drives may fail are 4 .