Question

Lily swims a 100-meter race. She swims the first half in 27.8

seconds. She swims the second half in 30.12 seconds. About how
much longer does it take her to swim the second half of the race than
the first half? Choose the best estimate.

Answer 1

Lily swam 2.32 seconds faster in the first half

Explanation:

She swam 50 meters in 27.80 seconds in the first half.

She swam 50 meters in 30.12 seconds in the second half.

Using the data provided, you subtract the two times

`30.12-27.80= 2.32`

To conclude, the answer is 2.32