Question: the speed of a boat in still water is 20 km / hr and the rate of current is 5 km / hr . the distance travelled downstream in 24 minutes is :
A) 9
B) 5
C) 7
D) 6
E) 10
Correct answer: e
Grade: 7 | Topic: Ratios and proportions | Difficulty: Medium | Standard: 7.RP.A.3