To find out how much baking soda Lisa should add to 9 lbs. of flour, we first need to determine the ratio of baking soda to flour based on the original amounts.
Lisa uses 2 tsp of baking soda for 6 lbs of flour.
The ratio of baking soda to flour is: \[ \frac{2 \text{ tsp}}{6 \text{ lbs}} = \frac{1 \text{ tsp}}{3 \text{ lbs}} \]
Now, to find out how much baking soda to add for 9 lbs of flour, we set up a proportion based on the ratio we just found: \[ \text{Amount of baking soda} = \frac{1 \text{ tsp}}{3 \text{ lbs}} \times 9 \text{ lbs} \]
Calculating this gives us: \[ \text{Amount of baking soda} = 3 \text{ tsp} \]
Therefore, Lisa should add 3 tsp of baking soda to 9 lbs. of flour.
The correct response is: 3 tsp.
1 answer