Answer:
I think it is 10 km/hr
Step-by-step explanation:
5 hrs = 40 more with 2 km/hr current
2 hrs= less 40 no current
40-2x5=30
30 without current for three hours
30/3=10 km/hr no current
CHECK
10x2=20
10x5=50+2x5=60
Speed = Distance / Time
Distance = Speed*Time
For this problem, we should bear in mind that current speed has an impact on the boat speed...
for upstream, the boat goes against the current, and so its speed is
U = V - C
where V is the speed of the boat
C is the current speed
for downstream, it will be:
D = V + C
Convert the problem into mathematical equations:
4D + 3U = 116
3D + 4U = 108
4(V+C) + 3(V-C) = 116
4V + 4C + 3V -3C =116
7V + C = 116
3(V+C) + 4(V-C) = 108
3V + 3C + 4V - 4C = 108
7V - C = 108
Solving the equations:
7V + C = 116
7V - C = 108
14V = 224
V = 16km/hr —-> speed of boat
to get C:
7(16) + C = 116
C = 4km/hr
Answer: Priya practiced for <u>189 minutes
</u>
Tyler practiced for <u>123 minutes
</u>
-------------------------------------------------------------------------------------------------------------
The Explanation: Now, Han spent 75 minutes practicing the piano over the weekend
Then, Priya practiced the violin for 152% as much time as Han practiced the piano.
Priya = 152% of 75 minutes + 75 minutes
= 152/100 × 75 + 75
= 1.52 × 75 + 75
= 114 + 75
= 189 minutes
Finally, Priya practiced for <u>189 minutes</u>
-------------------------------------------------------------------------------------------------------------
Tyler practiced the clarinet for 64% as much time as Han practiced the piano.
Tyler = 64% of 75 minutes + 75 minutes
= 64/100 × 75 minutes + 75 minutes
= 64 / 100 × 75 + 75
= 0.64 × 75 + 75
= 48 + 75
= 123 minutes
Lastly, Tyler practiced for <u>123 minutes</u>
Answer:
B.$12,100.00
Step-by-step explanation:
it is a pleasure to help you hope you understand if you have a question you can ask me or send me a help request.good luck.
