Distance runner

Distance runner already climbed three fifths of the total route. Thus passed 90 km. How many km he have to stop? How long is his route?

Correct result:

x =  60 km
y =  150 km

Solution:

$x=90\mathrm{/}3\cdot 5\cdot (5-3)\mathrm{/}5=60\text{ km}$

$y=90\mathrm{/}3\cdot 5=150\text{ km}$

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