If a country has a border length of 1,200 km and it manages to secure 75% of it,

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Question: If a country has a border length of 1,200 km and it manages to secure 75% of it, how many kilometers remain unsecured?

Options:

Correct Answer: 300 km

Solution:

Secured length = 1,200 km * 0.75 = 900 km. Unsecured length = 1,200 km - 900 km = 300 km.

If a country has a border length of 1,200 km and it manages to secure 75% of it, how many kilometers remain unsecured?

If a country has a border length of 1,200 km and it manages to secure 75% of it, how many kilometers remain unsecured?

Step 1: Identify the total border length, which is 1,200 km.
Step 2: Calculate the secured length by multiplying the total border length by 75%. This is done by calculating 1,200 km * 0.75.
Step 3: Perform the multiplication: 1,200 km * 0.75 = 900 km. This means 900 km of the border is secured.
Step 4: To find the unsecured length, subtract the secured length from the total border length. This is done by calculating 1,200 km - 900 km.
Step 5: Perform the subtraction: 1,200 km - 900 km = 300 km. This means 300 km of the border remains unsecured.

Percentage Calculation – Understanding how to calculate a percentage of a total length.
Subtraction – Performing subtraction to find the remaining length after securing a portion.