Scouts

Three scouts went on a three-day trip. On the second day went 4 km more than the first day. The third day went two times less than the first day. They went along 54 km. How many kilometers went every day together?

Final Answer:

a =  20 km
b =  24 km
c =  10 km

Step-by-step explanation:

$$\begin{gathered} b=4+a \\ c=a/2 \\ a+b+c=54 \\ a+(4+a)+a/2=54 \\ 5a=100 \\ a=\frac{100}{5}=20 \\ a=20=20\text{km} \end{gathered}$$

$b=4+a=4+20=24\text{km}$

$c=a/2=20/2=10\text{km}$

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