Kaelin drew a map of the Nueces River. In the scale Kaelin used for the map, 3 centimeters represents 20 kilometers. The actual length of the Nueces River is 82 kilometers. What is the length in centimeters of the Nueces River on Kaelin's map?

12.3 cm

Step-by-step explanation:

The scale used measures every 20 kilometres as 3 centimetres and the river is 82 kilometres.

If 3 centimetres is 20 kilometres, 82 kilometres is;

3 : 20

x : 82

20x = 3 * 82

20x = 246

x = 246/20

x = 12.3 cm

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