Lisa adds 2 tsp baking soda to 6 lbs. of flour. How much baking soda should she add to 9 lbs. of flour?
If Lisa adds 2 tsp of baking soda to 6 lbs. of flour, the ratio of baking soda to flour is 2/6 = 1/3.
So for 9 lbs. of flour, Lisa should add 1/3 * 9 = <<1/3*9=3>>3 tsp of baking soda. Answer: \boxed{3}.
To determine how much baking soda Lisa should add to 9 lbs. of flour, we can set up a proportion based on the ratio of baking soda to flour from the first scenario.
In the first scenario:
2 tsp of baking soda is added to 6 lbs. of flour.
To find out how much baking soda should be added to 9 lbs. of flour, we need to set up the proportion:
(baking soda in 1st scenario) / (flour in 1st scenario) = (baking soda in 2nd scenario) / (flour in 2nd scenario)
Let's plug in the values we know:
2 tsp / 6 lbs. = x tsp / 9 lbs.
To solve for x, we can cross multiply and solve for x:
2 tsp * 9 lbs. = 6 lbs. * x tsp
18 tsp = 6 lbs. * x tsp
Now we can isolate x by dividing both sides of the equation by 6 lbs.:
x tsp = (18 tsp) / (6 lbs.)
Simplifying the right side of the equation:
x tsp = 3 tsp
Therefore, Lisa should add 3 tsp of baking soda to 9 lbs. of flour.
To find out how much baking soda Lisa should add to 9 lbs. of flour, we can set up a proportion based on the ratio of baking soda to flour.
The ratio of baking soda to flour is 2 tsp to 6 lbs. Now, we can set up the proportion:
2 tsp / 6 lbs = x tsp / 9 lbs
To solve for x, we can cross multiply:
2 tsp * 9 lbs = 6 lbs * x tsp
18 tsp = 6 lbs * x tsp
Dividing both sides by 6 lbs, we get:
18 tsp / 6 lbs = x tsp
Simplifying further, we find:
3 tsp = x
Therefore, Lisa should add 3 tsp of baking soda to 9 lbs. of flour.