beefypy

2022-10-17

What is the length of the bar needed to represent 75 kilometers( in centimeters)?
In a bar graph, 1 centimeter represents 30 kilometers. What is the length of the bar needed to represent 75 kilometers( in centimeters)?

Do you have a similar question?

Carly Yang

Expert

1 cm represents 30 km, so 2 cm reprsents 60 km, and 3 cm represents 90 km; clearly the answer is between 2 cm and 3 cm.
How many 30 km segments can you fit into a 75 km stretch of road? (The answer won’t be a whole number.)
That’s the number of 1 cm segments that you’ll need to represent that stretch of road on the map.

Still Have Questions?

Cory Russell

Expert

For these sorts of questions, ratios are useful. The centimeter to kilometer ratio is 1:30. You want x:75.
That is, $\frac{1}{30}=\frac{x}{75}$
Can you go on from here?

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