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1 May, 03:09

85 is 20% of what number?

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[ ]

81 is 18% of what number?

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[ ]

What number is 40% of 135?

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[ ]

Olivia wants to walk 8000 steps today. She walked 45% of this total before lunch.

How many steps did Olivia walk before lunch?

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[ ]

Mary delivers 32 newspapers to her customers in 25 minutes. These deliveries represent 64% of her customers.

How many customers does Mary have?

16

20

50

57

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Answers (1)
  1. 1 May, 03:17
    0
    85 is 20% of what number?

    85 = 20% * n

    85 =.20n

    85/.20 =.20n/.20

    [n = 425]

    81 is 18% of what number?

    81 = 18% * n

    81 =.18n

    81/.18 = 18n/.18

    [n = 450]

    What number is 40% of 135?

    n = 40% * 135

    n =.40*135 = 54

    [54]

    Olivia wants to walk 8000 steps today. She walked 45% of this total before lunch.

    How many steps did Olivia walk before lunch?

    s = 45% * 8000

    s =.45*8000 = 3600

    [3600]

    Mary delivers 32 newspapers to her customers in 25 minutes. These deliveries represent 64% of her customers.

    How many customers does Mary have?

    32 = 64% * n

    32 =.64n

    32/.64 =.64n/.64

    n = 50

    [50]
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