Wednesday, 17 December 2014

How to solve the Problem of Ratio and Proportion?

Understand Ratio and Proportion with the help of a numerical. click on the Link to Watch the VIDEO explanation: Watch Video


Numerical
Now let's see a Problem on Ratio and Proportion.
A piece of string 175 cm in length was cut into two pieces, the ratio of their length was 5:2. Find the length of each piece.
Solution:
The ratio of the lengths of two pieces of the strings is 5:2. It means that the lengths of the two pieces are some common multiple of 5 and 2. Let this common multiple be x.
Then the lengths of two pieces are 5x cm and 2x cm respectively. As per the condition given in the problem, 5x + 2x = 175.
Therefore, 7x = 175
x = 25
Therefore, the length of the larger piece of string = 5x i.e., equal to 5 into 25 i.e., equal to 125 cm  and the length of the smaller piece of the string is equal to 2x is equal to 2 into 25 that equals 50 cm.

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