Answer:
12 pistachios
Explanation:
We need to find the unit rate. So we divide 5 from 15.
15/5=3
So we know that 1 bowl has 3 pistachios(which I think needs more).
Now we need to find how many pistachios are in 4 bowls. Which means we multiply 4 and 3.
4x3=12
So there are 12 pistachios in 4 bowls.
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hope it helps