if sally can paint a house in 4 hours and john can paint the same house in 6 hours how long will it take for both of them to paint the house together Help - simple algebra (1 viewing) (1) Guests
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TOPIC: if sally can paint a house in 4 hours and john can paint the same house in 6 hours how long will it take for both of them to paint the house together Help - simple algebra
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if sally can paint a house in 4 hours and john can paint the same house in 6 hours how long will it take for both of them to paint the house together Help - simple algebra
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How do you solve this problem If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? 2 hours and 24 minutes 3 hours and 12 minutes 3 hours and 44 minutes 4 hours and 10 minutes 4 hours and 33 minutes Apparently it's 2 hours and 24 minutes Thanks Martin
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if sally can paint a house in 4 hours and john can paint the same house in 6 hours how long will it take for both of them to paint the house together Help - simple algebra
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in 6 hour, how long will it take for both of them to paint the house together? 2 hours and 24 minutes 3 hours and 12 minutes 3 hours and 44 minutes 4 hours and 10 minutes 4 hours and 33 minutes Apparently it's 2 hours and 24 minutes Thanks Martin
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The administrator has disabled public write access. |
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if sally can paint a house in 4 hours and john can paint the same house in 6 hours how long will it take for both of them to paint the house together Help - simple algebra
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How do you solve this problem If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? 2 hours and 24 minutes 3 hours and 12 minutes 3 hours and 44 minutes 4 hours and 10 minutes 4 hours and 33 minutes Apparently it's 2 hours and 24 minutes Thanks Martin Sally paints 1/x of the house per hour and John paints 1/6 of it per hour. Together they paint 1/4 + 1/6 = 5/12 of the house per hour, so it takes them 12/5 hours, or 2 hours and 2/5 of another hour, to paint the house.
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The administrator has disabled public write access. |
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if sally can paint a house in 4 hours and john can paint the same house in 6 hours how long will it take for both of them to paint the house together Help - simple algebra
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How do you solve this problem If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? 2 hours and 24 minutes 3 hours and 12 minutes 3 hours and 44 minutes 4 hours and 10 minutes 4 hours and 33 minutes Apparently it's 2 hours and 24 minutes In one hour Sally paints 1/4 of the house, and John paints 1/6 of the house, so between them they can paint 1/4 + 1/6 = 5/12 of the house in an hour. To paint the whole house will therefore take them 1/(5/12) = 12/5 hours, or 2 hr. 24 min. Brian
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The administrator has disabled public write access. |
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if sally can paint a house in 4 hours and john can paint the same house in 6 hours how long will it take for both of them to paint the house together Help - simple algebra
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If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? Sally paints 1/4 of a house in an hour. John paints 1/6 of a house in an hour. Together they paint (1/4) + (1/6) = (10/24) of a house in an hour. At that rate, how many hours will it take them to paint a whole house?
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The administrator has disabled public write access. |
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if sally can paint a house in 4 hours and john can paint the same house in 6 hours how long will it take for both of them to paint the house together Help - simple algebra
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How do you solve this problem If Sally can paint a house in 4 hours, and John can paint the same house in 6 hour, how long will it take for both of them to paint the house together? 2 hours and 24 minutes 3 hours and 12 minutes 3 hours and 44 minutes 4 hours and 10 minutes 4 hours and 33 minutes Apparently it's 2 hours and 24 minutes If it's a multiple-guess test then you don't even need an equation, just some rough approximation skills: * If John were faster, as fast as Sally, it would take 2 hours. * If Sally were slower, as slow as John, it would take 3 hours. * Thus the answer is somewhere between 2 and 3 hours, and only one of the candidate answers qualifies.
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