Two boats left an island at the same time to return to the same home port. their rates of speed differ by 4km/h. the faster boat reached the port in 3 hours. the other boat took 30 minutes longer. find the average speed of each boat.

Average speed of the two boats are 28 km/hr. and 24 km/hr.

Step-by-step explanation:

Let the average speed of the boat with larger speed is x km/h and that of the other boat is y km/h.

Now, given that x - y = 4 ...... (1)

If the distance, that the first boat covers in 3 hrs. is d km then the second boat covers d km in 3.5 hrs.

Therefore, and

Now, from equation (1), we can get

⇒

⇒ km/hr.

Again, km/hr.

Therefore, the average speed of the two boats is 28 km/hr. and 24 km/hr. (Answer)

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70

a: inscribed angles

step-by-step explanation:

i reviewed this question with a peer and teacher, seems to be correct, me later