Final answer:
Leah finished the 200-meter race first with a time of 24.06 seconds, while Tanya's time was calculated as 684 seconds after performing the multiplication and addition in the given expression.
Step-by-step explanation:
To determine which girl finished the 200-meter race first, we need to calculate Tanya's time and then compare it with Leah's time. Tanya's time is given by the expression 24+(6×110) seconds, which needs to be simplified. To do so, we need to perform the multiplication first according to the order of operations.
Multiplying 6 by 110 gives us 660. Adding this to 24 yields a total of 684 seconds for Tanya. On the other hand, Leah's time to run the race is clearly stated as 24 and 6 hundredths seconds, which can also be written as 24.06 seconds. Comparing these two times shows that Leah finished the race significantly faster than Tanya as 24.06 seconds is much less than 684 seconds.
Therefore, Leah finished the race first.