A dishwasher can wash 14 plates per minute. Another dishwasher can wash 10 plates per minute. How many minutes will the two machines working together need to wash 1,560 plates?

1 Answer
Nallasivam V
Mar 18, 2017

To wash 1560 plates both dishwashers take #=65# minutes

Explanation:

Number of plates first dishwasher washes in one minute = 14
Number of plates second dishwasher washes in one minute = 10

Number of plates both the dishwashers wash in one minute #= 14 + 10=24#

To wash 24 plates both dishwashers take #=1 # minute
To wash 1560 plates both dishwashers take #=1 /24 xx 1560=65# minutes

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