3. An ice cream shop sells ice cream cones with exactly I of 3 ice cream favors in the cone. The 3 flavors are
vanilla, chocolate, and strawberry. Last Saturday, the
shop sold 42 cones, It sold 11 more with chocolate
than with vanilla and 2 more with vanilla than with
strawberry. How many comes with strawberry ice
cream did the shop sell that Saturday?

This can be solved using the strategy used in this post:

It comes down to calculating

(5+3−13)=(73)=7⋅6⋅51⋅2⋅3=35

What we are doing is the following: We create 5 'buckets' of flavors:

−−−|−−−|−−−|−−−|−−−

Now, we want do divide the three scoops over the 5 buckets. Below, a scoop is shown as O. Some possibilities are:

O|O|||O||OOO||etc...

There are 4 borders between the buckets and 3 scoops. Thus, there are (4+33)=35 possibilities

Step-by-step explanation:

The Answer is INCHES PER SECOND I know this bc it was on my test

Step-by-step explanation: