Salil wants to put a picture in a frame. The picture is $7 \frac{3}{5}$ cm wide. To fit in the frame the picture cannot be more than $7 \frac{3}{10}$ cm wide. How much should the picture be trimmed?

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\frac{5}{17} cm

\frac{3}{11} cm

\frac{3}{10} cm

\frac{4}{9} cm

answer is C.

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Detailed Solution

Concept: First, we will convert the mixed fraction into improper fraction. And then to find the width of picture to be trimmed, we will subtract the width of picture from the width of frame.
We will convert the mixed fraction into improper fraction:

Width of picture = 7 \frac{3}{5} = \frac{38}{5} cm = \frac{76}{10} cm

Width of frame = 7 \frac{3}{10} = \frac{73}{10} cm

Width of picture to be trimmed = Width of picture - Width of frame

= \frac{76}{10} - \frac{73}{10}

= \frac{3}{10} cm

Hence, the width of picture to be trimmed is

\frac{3}{10}

cm.

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