Answered

Pronto press xan print an order of booklets in 4.5 hours.red dot printers xan do the same job in 5.5 hours.how longwill.it take if both presses are used?

Sagot :

1/4.5 + 1/5.5 = 1/x

LCD: (4.5) (5.5) (x)

5.5x  + 4.5x = (4.5)(5.5)

10x = 24.75
 10        10

x = 2.475

If both presses are used, it will take only 2.475 hours or 2.5 hours to finish the same job.