Question

In a week, a light bulb factory produces 12,500 light bulbs. The ratio of light emitting diodes (LED bulbs) to compact fluorescent lamps (CFL bulbs) is 2:3. Of the LED bulbs produced, 3% were defective. How many LED bulbs were not defective?

A) 150
B) 2,425
C) 4,850
D) 7,275

Answer 1

C) 4,850

Explanation:

No. of

LED bulbs : CFL bulbs : Total

2 : 3 : 5

5000 : 7500 : 12 500

Percentage of non-defective LED bulbs = 100% - 3% = 97%

No. of non-defective LED bulbs = 97% x 5000 = 4850