To find out how much baking soda Lisa should add to 9 lbs. of flour, we need to set up a proportion based on the ratio of baking soda to flour.
The ratio of baking soda to flour is 2 tsp : 6 lbs.
Let x represent the amount of baking soda Lisa should add to 9 lbs. of flour.
Using the proportion, we can set up the equation:
2 tsp / 6 lbs = x tsp / 9 lbs.
Cross-multiplying, we get:
(2 tsp) * (9 lbs) = (6 lbs) * (x tsp)
18 tsp = 6 lbs * x tsp
Dividing both sides of the equation by 6 lbs, we get:
18 tsp / 6 lbs = x tsp
3 tsp = x tsp
Therefore, Lisa should add 3 tsp of baking soda to 9 lbs of flour.
Lisa adds 2 tsp baking soda to 6 lbs. of flour. How much baking soda should she add to 9 lbs. of flour?
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