A cafe served 180 pickles with 60 sandwiches. If the ratio of sandwiches to pickles is always constant, explain how you can use unit rates and proportion to find how many pickles are needed to serve 32 sandwiches.
The ratio of pickles to sandwiches is 180 : 60 which reduces to 3 : 1
The unit rate then is 3 pickles per sandwich or just 3.
If x = the number of sandwiches, and y = the number of pickles
y = 3x
For 32 sandwiches
y = 3(32) = 96 pickles
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