Sylvia set a treadmill for 38 minutes, and so far she has run 61% of the minutes. which is the best estimate for the number of minutes sylvia has run so far? 18 minutes 21 minutes 24 minutes 28 minutes

I worked out that 10% of 38 minutes is 3.8 minutes, and then I multiplied by 6 to get 60%. My answer was 22.8 minutes. This is just a rough calculation, but should be close enough for this question.

My asnwer would therefore be: 24 minutes.