To determine the amount of baking soda Lisa should add to 9 lbs. of flour, we can use the ratio of baking soda to flour.
The ratio of baking soda to flour is 2 tsp / 6 lbs. We can simplify this ratio by dividing both the numerator and denominator by 2:
1 tsp / 3 lbs.
Now, we can set up a proportion to find the amount of baking soda Lisa should add to 9 lbs. of flour:
1 tsp / 3 lbs. = x tsp / 9 lbs.
To solve for x, we can cross multiply:
1 * 9 = 3 * x
9 = 3x
Divide both sides by 3:
9 / 3 = x
3 = x
Therefore, Lisa should add 3 tsp of baking soda to 9 lbs. of flour. Thus, the correct option is 3 tsp.
Lisa adds 2 tsp baking soda to 6 lbs. of flour. How much baking soda should she add to 9 lbs. of flour?
Options:
3 tsp
18 tsp
27 tsp
9 tsp
1 answer