Using a scale on maps and plans

Question

Abigay draws a plan of her bathroom floor. The bathes floor is a rectangle 3m by 4m . Abigay uses a scale of 1:20 what will the size of the plan be?

Answer 1

Convert m to cm.

3m x 4m then becomes 300cm x 400cm

300 is divisible by 20 15 times and 400 is divisible by 20 20 times.

So 1:20 means 1 unit represents 20 cm, therefore the plan is 15 units x 20 units