Question

A machine makes electric bulb, in which 3 out of every 65 are found to be faulty. It made 45 faulty bulbs in a day. How many good bulbs were made that day?​

Answer 1

Answer:

930 good bulbs

Step-by-step explanation:

Given A machine makes electric bulb, in which 3 out of every 65 are found to be faulty. It made 45 faulty bulbs in a day. How many good bulbs were made that day

Total number of bulbs is 65 and faulty bulbs will be 65 - 3 = 62

It made 45 bulbs in a day.

So there are 62 faulty bulbs

For 3 bulbs faulty bulbs are 62

So for 45 bulbs we get

65 x 42 / 3

62 x 15

930 bulbs

So 930 good bulbs were made that day.

Answer 2

Answer: Number of good bulbs made by machine is 930

Step-by-step explanation:

Step 1- Machine makes bulb in a day = 65

In which 3 of them are found to be faulty.

Then number of good bulbs made by machine = 65-3 = 62

Step 2- Number of faulty bulbs made by machine = 45

Then, number of times made by machine = 45/3 = 15

Step 3- So, number of good bulbs = number of good bulbs * number of times

= 62 * 15 = 930 (Answer)