To solve this problem, we need to determine how much time it will take for Sarita and Kavita, traveling in opposite directions on a circular track, to meet again for the first time.

Given:

• Length of the circular track = 2200 meters
• Speed of Sarita = 20 km/hr
• Speed of Kavita = 16 km/hr

First, we convert their speeds from km/hr to m/s, as the track length is given in meters. The conversion factor is \(1 \text{ km/hr} = \frac{5}{18} \text{ m/s}\).

• Speed of Sarita in m/s = \(20 \times \frac{5}{18} = \frac{100}{18} \approx 5.56 \text{ m/s}\)
• Speed of Kavita in m/s = \(16 \times \frac{5}{18} = \frac{80}{18} \approx 4.44 \text{ m/s}\)

Since they are moving in opposite directions, their relative speed is the sum of their speeds:

v_{\text{relative}} = 5.56 + 4.44 = 10 \text{ m/s}

Since the track is circular, they will meet when the sum of the distances they travel equals the length of the track:

Time taken to meet = Total Distance / Relative Speed

t = \frac{2200}{10} = 220 \text{ seconds}

We convert 220 seconds into minutes and seconds:

• 220 seconds = 3 minutes and 40 seconds (since 60 seconds make 1 minute).

Thus, Sarita and Kavita will meet again for the first time after 3 minutes and 40 seconds.

Therefore, the correct answer is:

3 minutes 40 seconds