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3 years ago

Type the correct answer in the box. Use numerals instead of words.

Mathematics

1 answer:

attashe74 [19]3 years ago

5 0

Answer:

80 minutes

Step-by-step explanation:

Work done by Mark in 1 minute = 1/120

Work done by Alexis in 1 minute = 1/240

Work done by Mark and Alexis in 1 minute = 1/120 + 1/240

$= \dfrac{1*2}{120*2}+\dfrac{1}{240}\\\\=\dfrac{2}{240}+\dfrac{1}{240}\\\\=\dfrac{3}{240}\\\\=\dfrac{1}{80}$

They both can load all the packages in 80 minutes.

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