Question

Lily swims a 100-meter race. She swims the first half in 27.8 seconds. She swims the second half and 30.12 seconds. About how long does it take Lily to swim the whole race? Choose the best estimate.

Answer 1

The answer to your question is 57.92. Estimate: 58

Answer 2

C. 58 seconds.

Step-by-step explanation:

We have been given that Lily swims the 1st half of a 100 meter race in 27.8 seconds and the 2nd half in 30.12 seconds. We are asked to find the total time taken by Lily to swim the whole race.

To find the total time taken by Lily to swim the complete race we will add time taken by Lily to complete the 1st and 2nd halves.

`\text{Time taken by Lily to complete the whole race}= 27.8\text{ seconds}+30.12\text{ seconds}`

`\text{Time taken by Lily to complete the whole race}= 57.92\text{ seconds}`

Upon rounding our answer to nearest whole number we will get,

`\text{Time taken by Lily to complete the whole race}\approx 58\text{ seconds}`

Therefore, the total time taken by Lily to complete the whole race is 58 seconds and option C is the correct choice.