Subject: General Aptitude · Chapter: Time and Work · Exam: 2006 · Marks: · Difficulty:
A conveyor belt delivers baggage at the rate of 3 tons in 5 minutes and a second conveyor belt delivers baggage at the rate of 1 ton in 2 minutes. How much time will it take to get 33 tons of baggage delivered using both the conveyor belts together?
(a)25 min 30 sec
(b)30 min
(c)35 min
(d)45 min
Answer
Answer (as printed): B
Explanation
Baggage delivered by first belt in 1 min = tons. 5 1 Baggage delivered by second belt in 1 min = ton. 2 Baggage delivered by both belts in 1 min 3 1 11 = + ton = tons. 5 2 10 11 33 × 10 \ Required time = 33 ÷ min = min 10 11 = 30 min.
Explanation as extracted from the printed page; notation may be imperfect.