Fractions, SM-Bank 050 MC

A walking path near the beach is paved for half of the length, cobbled stone for `3/10` of the length and then grass for the rest of the path.

For what fraction of the path is it grass?

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`A`

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`text(Fraction of the path that is grass)`

`=1-(1/2 + 3/10)`

`=1-8/10`

`=2/10=1/5`

`=>A`