Tricky questions - help!

[moose]

I think the ratio should be 50mm : 1km that is 50mm : 100,000 (5 zeros not 6) therefore the final answer should be 1:200,000.

You’re so right, map questions are often worded to make them seem more difficult. It’s a bother, especially if you’re not sure which conversation factor to use (e.g. times/divide by 100, 10 .....). Adding an extra 0 or two is a common/frustrating mistake. What do you make of the questions below? 2 and 3 are reversed *rolls eyes*.

1. A road map measured 4.5 cm, which represented a distance of 45km. What distance does 1mm on the map represent?

2. A road shown on a map measures 50mm, which represents an actual distance of 1km. Find the scale to which the map is drawn.

3. A line 8cm long represents a distance of 3.2m. The scale to which the line is drawn is 1m to ? cm.

Thanks