Management Aptitude Test Dec 2013 Paper

Question : 99 of 200

Marks: +1, -0

Two coal loading machines, each working 12 h per day for 8 days, handle 9000 tonne of coal with an efficiency of 90%, while 3 other coal loading machines at an efficiency of 80% are set to handle 12000 tonne of coal in 6 days. How many hours per day should each machine work?

18 h per day
16 h per day
20 h per day
14 h per

Validate

Solution:

(b) Two machines with 90% efficiency, handles 9000 tonnes of coal in 8 days working 12 h per day.
∴ 3 machines with 80% efficiency, handling 12000 tonnes of coal in 6 days need

{2× 90×12000 × 8 ×12}/ {3 × 80 × 9000 × 6}

= 16 h per day

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