Lisa adds 2 tsp baking soda to 6 Ibs. of flour. How much baking soda should she add to 9 Ibs. of flour?
•27 tsp
•9 tsp
•18 tsp
•3 tsp
To find the ratio of baking soda to flour, we can set up a proportion.
We know that 2 tsp of baking soda is added to 6 lbs of flour.
Let x be the amount of baking soda to be added to 9 lbs of flour.
So, we have the proportion:
2 tsp / 6 lbs = x tsp / 9 lbs
Using cross multiplication, we can solve for x:
2 tsp * 9 lbs = 6 lbs * x tsp
18 tsp = 6 lbs * x tsp
Dividing both sides by 6 lbs, we find:
18 tsp / 6 lbs = x tsp
3 tsp = x tsp
Therefore, Lisa should add 3 tsp of baking soda to 9 lbs of flour.
The correct answer is:
•3 tsp