Of the balloons recently sold by a party store, 2 were blue and 10 were other colors. Considering this data, how many of the next 18 balloons sold would you expect in be blue
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Of the balloons recently sold by a party store, 2 were blue and 10 were other colors. Considering this data, how many of the next 18 balloons sold would you expect in be blue
Assuming a consistent proportion, x is to 18 as 2 is to 10
x 2
––– = –––
18 10
cross multiply 10x = 36
x = 3.6
You can't have point six of a balloon,
so round this to a whole number, one
way or the other. Convention would
be to round up.
.
