# Percentages + per mil - math problems

#### Number of problems found: 6 Road sign informs the gradient is 10.9%. Calculate the angle which average decreases.
• Altitude difference What a climb in per mille of the hill long 4 km and the altitude difference is 6 meters?
• AMSL and skiing Tomas skis from point A (3200m above sea level to place B. Hill has 20% descent. The horizontal distance between the start and finish is 2,5km. At what altitude is point B?
• Crystal The crystal grows every month 1.2 permille of its mass. For how many months to grow a crystal from weight 177 g to 384 g?
• Climb in percentage The height difference between points A and B is 475 m. Calculate the percentage of route climbing if the horizontal distance places A, B is 7.4 km.
• River Calculate how many permille river Dunaj average falls, if on section long 957 km flowing water from 1454 m AMSL to 101 m AMSL.

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