The rule of three:
ounces _____ pound
16 ----------------- 1
40 ----------------- y
Solving:
\(\frac{16}{40} = \frac{1}{y}\)
Cross multiplies
\(16*y = 40*1\)
\(16y = 40\)
\(y = \frac{40}{16}\)
\(\boxed{y=2.5}\)
Answer:
2.5 of chocolate chips are in the two batches