Question

Maya started to run on a treadmill after setting its timer for 99 minutes. The display says that she has finished 27% of her run. How many minutes have gone by? Round your answer to the nearest tenth. minutes

Answer 1

26.73 minutes have gone by

Explanation:

• Use cross multiplication

x 27

---- = ----- since we are trying to find how many minutes out of 99 passed,

99 100 place x for the missing digit

• solve

x times 100 = 99 times 27

• simplify

x100 = 2673 x times 100 is just x100 since we don't know what x is, and 99

times 27 is 2673

• figure for x

x100 = 2673 to find x, it needs to be alone (x is very introverted :'> ) we can

---- ------- remove 100 by doing the opposite of what 100 is doing to the

100 100 x. Since it is 100 TIMES x, we will remove it by dividing 100 by

100 (which crosses it out) and then 2673 divided by 100. 2673

x = 26.73 divided by 100 gives us 26.73, so x equals 26.73.