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iPods
Answer
:
Six
boys download six songs
in six days.
Twelve
boys
download
twelve songs in six days..
Twelve
boys
download
twenty-four songs in twelve days.
Four
girls download
four
songs in four days.
Twelve
girls
download
twelve songs in four days.
Twelve
girls
download
thirty-six songs in twelve days.
Therefore
: Twelve
boys
and twelve girls download 24 + 36 = 60
songs
in twelve days.
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