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Question 118.
Roma gave a wooden board of length 15014 cm to a carpenter for making a shelf. The Carpenter sawed off a piece of 4015 cm from it.What is the length of the remaining piece?

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Solution

Given that

The total length of the wooden board given by Roma to the carpenter = 15014 cm
The length of the wooden board the carpenter sawed off = 4015 cm

The total length of the wooden board = The length of the wooden board the carpenter sawed off + Length of the remaining piece

Length of the remaining piece = The total length of the wooden board - The length of the wooden board the carpenter sawed off

On substituting the values we get:
Length of the remaining piece =150144015 cm

We can express a mixed fraction as an improper fraction as (Whole×Denominator) + NumeratorDenominator.

Length of the remaining piece =150×4+1440×5+15 cm
Length of the remaining piece =60142015 cm

Now, the LCM of the denominator of the fractions 6014 and 2015 i.e. the LCM of 4 and 5 is 20.

Length of the remaining piece =601×54×5201×45×4 cm
Length of the remaining piece =30052080420=220120 cm

We can express an improper fraction as a mixed fraction by dividing the numerator by denominator to obtain the quotient and the remainder.

Then the mixed fraction will be written as QuotientRemainderDivisor.

⎢ ⎢ ⎢ 20)2201(11020 20 201⎥ ⎥ ⎥

Length of the remaining piece =110120cm
So, the length of the remaining piece is 110120cm.


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