Question

10% of a journey is 72km, how long is the whole journey?
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Answer 1

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Let the whole journey=x

10% of x=72

$\sf \frac{10}{100} \times x= 72$

$\sf 10 x = 72 \times 100$

$\sf 10x = 7200$

$\sf x=\frac{7200}{10} =720km$

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