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Zolol [24]
3 years ago
11

A bus averages 2 miles per hour faster than a motorcycle. If the bus travels 165 miles in the same time it takes the motorcycle

to travel 155 miles, then what is the speed of each?
Mathematics
1 answer:
Pavlova-9 [17]3 years ago
7 0

Answer:

The bus travels at 33 miles per hour while the motorcycle travels at 31 miles per hour

Step-by-step explanation:

<em>Represent the bus average speed with x and the motorcycle average speed with y</em>

Given

x = y + 2

Distance covered by bus = 165 miles

Distance covered by motorcycle in same time = 155 miles

Required

Determine the speed of each

Average Speed is calculated as;

Average\ Speed = \frac{Distance}{Time}

Since the two are measured with the same time, represent time with T

For the bus

Average\ Speed = \frac{Distance}{Time} becomes

x = \frac{165}{T}

Make T the subject of formula

T = \frac{165}{x}

For the motorcycle

y = \frac{155}{T}

Make T the subject of formula

T = \frac{155}{y}

Since, T = T; we have that

\frac{165}{x} = \frac{155}{y}

Cross Multiply

165y = 155x

Substitute x = y + 2

165y = 155(y+2)

Open Bracket

165y = 155y - 310

Collect Like Terms

165y - 155y = 310

10y = 310

Divide both sides by 10

y = 31

Recall that x = y + 2

x = 31 +2

x = 33

Hence;

<em>The bus travels at 33 miles per hour while the motorcycle travels at 31 miles per hour</em>

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