# Vroom! Vroom! Vroom!

Algebra Level 2

Three persons $$X,Y,Z$$ travel from point $$A$$ to point $$B$$. They leave point $$A$$ at the same time and follow the same route. $$X$$ rides a motorcycle at a speed of $$56 km/h$$, $$Y$$ walks at a speed of $$8 km/h$$ and $$Z$$ walks at a speed of $$7 km/h$$.

At the beginning, $$X$$ gives a lift to $$Y$$ at $$A$$ to travel a part of the journey and then comes back to pick up $$Z$$. They all arrive at point $$B$$ at the same time. Given that $$Y$$ walks $$2.8$$ km. The distance which $$Z$$ walked is $$x$$ km. Find $$10x$$.

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