Question

The length of a steel bar used to make a material is 60 m 50 cm. From both its ends, two parts are cut as shown:


Find the length of the remaining steel bar.

• A. 5,060 cm
• B. 5,040 cm
• C. 7,060 cm
• D. 7,040 cm

Answer 1

The correct option is B 5,040 cm

$\text{Actual length of the steel bar = 60 m 50 cm}$
From both its sides, two parts are cut off.

So,
Adding the common units separately, we get:


$\text{Total length of the parts cut off = 10 m 10 cm}$

Now, subtracting the common units separately, we get:


So, the length of the remaining steel bar is 50 m 40 cm.

Now, 1 m = 100 cm
$\Rightarrow 50\text{m}=50\times 100\text{cm}=5,000\text{cm}$

∴ Length of the remaining steel bar = 5,000 cm + 40 cm = 5,040 cm