How to solve , a bank can process and prepare statements in 30hr. A new computer can do the job in 20 hrs. If the bank uses both computers together, how long will it take to process the statements
ago in Fraction Problems by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

To make it simpler, imagine that there are 60 statements.

The old computer can manage 60 statements in 30 hours, which is 60/30=2 statements in an hour.

The new computer can manage 60 statements in 20 hours, which is 60/20=3 statements in an hour.

Together they can manage 2+3=5 statements in an hour. So it would take 60/5=12 hours.

ago by Top Rated User (677k points)
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
83,582 questions
88,466 answers
1,983 comments
5,536 users