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Q.

Ratio of 4 m to 400 cm is-

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a

1:1

b

1:2

c

2:1

d

3:2

answer is A.

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Detailed Solution

Concept- To answer the question, we will make use of the ratio and proportion principles. To further streamline the procedure, we shall convert from m to cm or from cm to m using the principles of mensuration.
We need to calculate the ratio of 400 cm to 4 meters. Now that we are aware that 4 m and 400 cm are measured in two different units, we can see that the ratio is always between the same amounts. Therefore, we must convert them both into the same units.
Now that we know, 1 m equals 100 cm. This can be used to convert 4 meters to centimeters as follows:
Question Image

Question Image

Now that we know the ratio between two items is represented as a: b or ab, we must determine the ratio of 400 cm to 400 cm. The ratio is therefore

, or 1:1.
Hence, option 1 is correct.

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