Answers

2014-03-03T13:28:58+05:30
Let the time spent by vanessa in volunteering be x hours
and the time spent by callin in volunteering be y hours then equation showing how many times more hour vanessa spent volunteering than collin will be
x=3y
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2014-03-05T17:44:43+05:30
Let the time spend by Collin = z
then the time spend by Vanessa=y
and the eqation must be
                     y=3z


0