A company makes car parts and has a certain quota to meet each day. Every worker in the company can turn out either 3 oil filters or 16 spark plugs per hour. At the end of the 6 hour day, the company needs to have made 60 oil filters and 256 spark plugs. How many workers does the company need to employ to meet their quota?

Solution(By Examveda Team)

Work rate of workers = 3 oil filters or 16 spark plugs per hour.

One worker works for 6 hour,

Work = 6 *3 = 18 oil filters or 16 *6 = 96 Spark plugs

If 3 works work on filters for 6 hour, then they can make = 18*3 = 54 oil filters.

It means 4th worker needs 2 more hours to complete 60 oil filters.
On other hand 2 worker can make 96*2 = 192
Rest Spark = 256 - 192 = 64.
It means 3rd worker needs 4 hours to complete 64 spark plugs.

Total worker = 3 +2 +1 = 6
The 6th worker will work on both fillter making and as well as spark plugs.