Question

Jayashree could swim a particular length in 3 minutes 22 seconds. After some practice,
she could swim the same length in 2 minutes 40 seconds. By how much time had her
speed improved?
Solve this sum step by step ​

Answer 1

Answer:

2 mins 42 seconds

Step-by-step explanation:

Before Practice:

Time taken = 3 mins 22 seconds

After Practice:

Time table = 2 mins 40 seconds

To find the duration that she has improved

⇒ we need to find the difference in the two timings.

Difference = 3 mins 22 seconds - 2 mins 40 seconds

To solve this equation:

STEP 1: Rewriting the first timing by converting 1 min into 60 seconds:

= 4 mins 82 seconds - 2 mins 40 seconds

STEP 2: Subtracting the mins and seconds separately:

= 2 mins 42 seconds

Answer: 2 mins 42 seconds