A ALEKS Placement Asses+ (De https://www-awhaleks.com/alekscgi/x/Isl.exe/1ou-IgN

Question

A ALEKS Placement Asses+ (De https://www-awhaleks.com/alekscgi/x/Isl.exe/1ou-IgNslkr78P3 H-UjunyGuFegC8W0Gbtpb560CuJXGSci Search Unproctored Placement Assessment Due: Saturday 10:21 AMI Question 19 William Lspañol A motorboat takes 4 hours to travel 128 km going upstream. The return trip takes 2 hours going downstream. What is the rate of the boat in still water and what is the rate of the current? upstrem. at s the rate of the Rate of the boat in still water: km/h Rate of the current: b: l Don't Know Submit :06 PM Type here to search 9/28/20173

Explanation / Answer

Let the speed of boat in still water be x and speed of current be y.

Speed in upstream = 128/4 = 32

Speed in downstream = 128/2 = 64

x + y = 64

x - y = 32

Adding these two equations, we get

2x = 96

Or, x = 48

y = 48 - 32 = 12

So, rate of boat in still water = 48 kmph

Rate of current = 12 kmph

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.