Lisa adds 2 tsp baking soda to 6 lbs. of flour. How much baking soda should she add to 9 lbs. of flour? (1 point)
18 tsp
9 tsp
3 tsp
27 tsp
To find the amount of baking soda to add to 9 lbs. of flour, we need to set up a ratio using the given information.
The ratio of baking soda to flour is 2 tsp : 6 lbs.
To find how much baking soda should be added to 9 lbs. of flour, we can set up the proportion:
2 tsp / 6 lbs. = x tsp / 9 lbs
Cross multiplying, we get:
6 lbs. * x tsp = 2 tsp * 9 lbs.
6x = 18
Dividing both sides by 6, we find:
x = 3 tsp
Therefore, Lisa should add 3 tsp of baking soda to 9 lbs. of flour. So the correct answer is 3 tsp.