Two batches of chocolate chip cookies call for 40 ounces of chocolate chips. If there are 16 ounces in a pound, how many pounds of chocolate chips are in the two batches?
2.5 pounds of chocolate chips.
You have to divide 40 by 16 to get the amount of pounds in two batches. 40/16 is 2.5.
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