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(#M40151414) IBM Numerical Ability question aptitude Keep an EYE

if a certan computer is capable of printing 4900 monthly

Asked In IBM monisha (10 years ago)

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Anshul Vyas  (9 years ago)

Question: If a certain computer is capable of printing 3900 monthly credit card bills per hour, while a new model is capable of printing at a rate of 6300 per hour, the old model will take approximately how much longer than the new model to print 10300 bills?

a) 97
b) 258
c) 60
d) 106
e) 14
Solution: the old computer will print 10300 bills in 10300/3900 hours = 103/39
the new computer will print 10300 bills in 6300/10300 hours = 103/63
the time difference is 103/39 - 103/63 = (6489 - 4017) / 39*63 = 2472/2457 = 1 hour = 60 minutes

the answer is c) 60

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sk immu  (10 years ago)

please write complete
question

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kshama rai  (7 years ago)

a certain computer is capable of printing 4900 monthly credit card bills per hour, while a new model is capable of printing at a rate of 6600 per hour, the old model will take approximately how much longer than the new model to print 10000 bills?
Answer: 31 minutes
Explanation:
Old model is capable of printing at a rate of 4900 per hour
New model is capable of printing at a rate of 6600 per hour
Old model time taken to print 10000 cards = 10000/4900 = 100/49
New model time taken to print 10000 cards = 10000/6600 = 100/66
Old model – new model: 100/49 - 100/66 = 1700 /(49 × 66) = 850/(49 × 33) = 0.525 hrs => 31 mins
Therefore, the old model will take approximately 31 mins longer than the new model to print 10000 bills

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