delaneajohnson delaneajohnson

28-09-2018
Mathematics

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June father is six times as old as June the sum of their age is no less than 77 what is the youngest age June can be

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kudzordzifrancis kudzordzifrancis

28-09-2018

Let June's age be
[tex]x \: years[/tex]

Then his father is
[tex]6x \: years[/tex]

The sum of their ages is no less than 77 means,
[tex]x + 6x \geqslant 77[/tex]
[tex]7x \geqslant 77[/tex]
[tex]x \geqslant 11[/tex]
The youngest age June can be is 11

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