Question
Asked Oct 15, 2019

Adam and Brenda are running a race. Brenda runs 20% faster than Adam. They each run for a half hour and they run a total of 11 miles. How fast does each run? Incliude unites (mi/hr).

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Step 1

Given that

Adam and Brenda are running a race
Brenda runs 20% faster than Adam
They each run for a half hour
and they run a total of 11 miles
to calculate speed of each
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Adam and Brenda are running a race Brenda runs 20% faster than Adam They each run for a half hour and they run a total of 11 miles to calculate speed of each

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Step 2

Let Adam runs with the speed of x mil/hr.

As Brenda runs 20% faster than Adam then speed of Brenda is
x 20% of x
20
x
100
x +0.2x
1.2.x
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As Brenda runs 20% faster than Adam then speed of Brenda is x 20% of x 20 x 100 x +0.2x 1.2.x

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Step 3

Distance travelled...

speed x time
xx0.5
= 0.5x
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speed x time xx0.5 = 0.5x

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