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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
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B
5,040 cm
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C
7,060 cm
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D
7,040 cm
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Solution

The correct option is B 5,040 cm
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:


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
50 m=50×100 cm=5,000 cm

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

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