Hackerrank Day 0: Weighted Mean

screen-shot-2016-12-28-at-5-21-45-pm

Solution in Ruby:

screen-shot-2016-12-28-at-5-21-07-pm

I think I could have calculated the numerator with a for loop, but wasn’t sure how to do it.  Need to review other loops  as I usually default to while loop for everything now.

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Hackerrank Day 0: Weighted Mean

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