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11 January, 05:32

Samantha works at a nursery where she pots plants. It takes her 1 1/2 hours to pot 12 plants. How many plants can she pot in 2 1/2 hours?

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  1. 11 January, 08:32
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    Step-by-step explanation:

    First find how many plants Samantha can plant in half an hour. To figure that out do 12 divided by 3 because in 1.5 hours she can plant 12 plants.

    12:3=4

    Samantha can plant 4 plants in half an hour. Since 2.5 hours in 1 more hour than 1.5 hours multiply 4 by 2 to get the total amount she can plant in one hour.

    4 x 2 = 8

    Samantha can plant 8 plants in an hour. Now add 8 to 12 because 12 plants is 1.5 hours and 8 plants is 1 hour and 1.5 + 1 = 2.5 hours.

    8 + 12 = 20.

    Samantha can plant 20 plants in 2.5 hours.
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