SOLUTION: AT THE NCNB SAVINGS BANK IT TAKES A COMPUTER 4 HOURS TO PROCESS AND PRINT PAYROLL CHECKS. WHEN A SECOND COMPUTER IS USED AND THE TWO COMPUTERS WORK TOGETHER, THE CHECKS CAN BE PROC

Question 59842: AT THE NCNB SAVINGS BANK IT TAKES A COMPUTER 4 HOURS TO PROCESS AND PRINT PAYROLL CHECKS. WHEN A SECOND COMPUTER IS USED AND THE TWO COMPUTERS WORK TOGETHER, THE CHECKS CAN BE PROCESSED AND PRINTED IN 3 HOURS. HOW LONG WOULD IT TAKE THE SECOND COMPUTER BY ITSELF TO PROCESS AND PRINT THE PAYROLL CHECKS?
Answer by checkley71(8403) (Show Source): You can put this solution on YOUR website!
(4*X)/(4+X)=3 THIS FORMULA IS THE PRODUCT DIVIDEDBY THE SUM OF THE TWO MACHINES EQUALS THE COMBINED TIME FOR BOTH MACHINES.
4X=3(4+X)
4X=12+3X
4X-3X=12
X=12HOURS FOR THE SECOND MACHING TO PROCESS THE CHECKS.

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