Question

19. If the scale is 1:100 on a plan, and a fence is 7,500 mm,

how many millimetres will it measure on the plan?
mm​

Answer 1

It will measure 75 millimetres on the plan.

Explanation:

Given:

Scale on the plan = 1:100

Length of the fence = 7,500 mm

To find:

how many millimetres will it measure on the plan

Solution:

As the ratio on the plan is 1: 100, the for 7500 the ratio will

x : 7500

Now by cross multiplication we get

`7500 * 1 = x * 100`

`7500 = 100x`

`x =( 7500)/(100)`

x = 75