20120

Question

A walking path near the beach is paved for half the length, cobbled stone for 310\dfrac{3}{10} of the length and then grass for the rest of the path.

For what fraction of the path is it grass?

Worked Solution

Percentage of the path that is grass
= 1−(12+310)1 - \bigg( \dfrac{1}{2} + \dfrac{3}{10}\bigg)
= 1−8101 - \dfrac{8}{10}
= {{{correctAnswer}}}

Variant 0

DifficultyLevel

558

Question

A walking path near the beach is paved for half the length, cobbled stone for 310\dfrac{3}{10} of the length and then grass for the rest of the path.

For what fraction of the path is it grass?

Worked Solution

Percentage of the path that is grass
= 1−(12+310)1 - \bigg( \dfrac{1}{2} + \dfrac{3}{10}\bigg)
= 1−8101 - \dfrac{8}{10}
= 15\dfrac{1}{5}

Question Type

Multiple Choice (One Answer)

Variables

Variable nameVariable value
correctAnswer
$\dfrac{1}{5}$

Answers

Is Correct?Answer
✓

15\dfrac{1}{5}

x

310\dfrac{3}{10}

x

35\dfrac{3}{5}

x

810\dfrac{8}{10}