If 72 persons build a 220-m-long wall in 6 days, then how many persons will be required to build the same type of wall of 550-m length in 5 days?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 216.
In one day a 220 m wall build by man = 6 × 72
One day - One meter work to build by man = (6 × 72)/220 = 108/55 units
One day 550 m wall build by man = 108/55 × 550 = 1080
5 days 550 m wall build by man = 1080/5 = 216 man