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Evgesh-ka [11]
2 years ago
9

A map has a scale of 1 in : 3 km. If the actual distance is 15 km, what is the distance on the map?

Mathematics
1 answer:
Black_prince [1.1K]2 years ago
4 0

Answer:

5 in.

Step-by-step explanation:

The ratio of map distance to real distance is 1 in : 3 km meaning that 1 inch on the map describes 15 km in real life.

15 km is 5 times 3 km, so the map distance is 5 times 1 in., or 5 in.

1 in. x 5 : 3 km x 5

This is a "school math" problem where things come out nicely!  Another way to look at this is with equivalent fractions.

\frac{\text{1 in}}{\text{5 km}} = \frac{\text{m}}{\text{15 km}}

"cross multiply"

5m = (15)(1)\\5m=15\\m=3 \text{ in.}

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