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20 July, 08:36

Frances can complete

91

9191 oil changes in

7

77 days.

How many oil changes can Frances complete in

11

1111 days?

+2
Answers (1)
  1. 20 July, 11:30
    0
    let oil change be x

    91 / 7 = x / 11

    (91 * 11) / 7 = x

    13 * 11 = x
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