Mathematics: Martha can paint a room in 2 hours. jamie can paint the same room in 6 hours. how long, to the nearest tenth of an hour, will it take them to paint the room together?

Martha can paint a room in 2 hours. jamie can paint

Ответ:

norinashanleyc

10.03.2022

Martha in 2 hours = 1 room
Martha in 1 hour = 1/2 room.

As like the Martha,
Jamie in 1 hour = 1/6 room.

Both together,
$\frac{1}{2} + \frac{1}{6} \\ \frac{3 + 1}{6} = \frac{4}{6} = \frac{2}{3} \\ = 0.6666...$
= 0.67 hours to paint a room.

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Ответ:

kaleaweeks

29.09.2022

Mathematics

That's a lowercase xi in the Greek alphabet. In set theory, it usually represents the universal set, so it shouldn't be the intersection.

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Martha can paint a room in 2 hours. jamie can paint the same room in 6 hours. how long, to the nearest tenth of an hour, will it take them to paint the room together?

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