A man makes 80 items in the 1st hour His efficiency decreases by 20 in the 2nd hour increases by 45 ...........

Quantitative Aptitude (CDS) Mixture and Alligation

A man makes 80 items in the 1st hour. His efficiency decreases by 20% in the 2nd hour, increases by 45% in the 3rd hour, decreases by 25% in the 4th hour and increases by 55% in the 5th hour. If he has to work for more than 1 hour, then in which hour the average number of items produced per hour then would be maximum ?

2nd hour

5th hour

3rd hour

None of these

Explanation:

Number of items made in 1st hour = 80
Number of items made in 2nd hour = 64
Number of items made in 3rd hour = 116
Number of items made in 4th hour = 60
Number of items made in 5th hour = 124
So, obviously items made in the 5th hour is maximum.