A boat moves downstream at the rate of 2 km in 20 minutes and upstream at the ra May 24, 2022 by admin ✪ Choose the correct option.A boat moves downstream at the rate of 2 km in 20 minutes and upstream at the rate of 4 km in an hour. What is the speed of the stream?A. 4 km/hrB. 3 km/hrC. 2 km/hrD. 1 km/hr Submit Answer
