Final answer:
Ana and Mykah will use 105 teaspoons of salt this month for their chicken soup, as they used 30% less salt than the original 150 teaspoons last month.
Step-by-step explanation:
The question asks us to calculate the amount of salt Ana and Mykah will use this month given that they used 30% less last month. To find this, we first determine what 30% less than 150 teaspoons is.
Step 1: Calculate 30% of 150 teaspoons.
- 30% in decimal form is 0.30.
- 0.30 × 150 teaspoons = 45 teaspoons.
Step 2: Subtract the 30% less from the original amount.
- 150 teaspoons - 45 teaspoons = 105 teaspoons.
Therefore, this month Ana and Mykah will use 105 teaspoons of salt for their chicken soup.