Final answer:
By dividing the total cost by the total weight of the almonds, we find the cost per pound as $6.35. Then, using the cost per pound, we calculate that Mayela can purchase approximately 0.16 pounds of walnuts for $1.
Step-by-step explanation:
To determine how many pounds of walnuts Mayela can purchase for $1, we first have to find out the cost per pound of the almonds she bought. Mayela bought 3.4 pounds of almonds for $21.58. To do this, we divide the total price by the weight of the almonds:
Cost per pound = Total cost / Total weight
Cost per pound = $21.58 / 3.4 pounds
Cost per pound = $6.35 (approximately).
Now, if walnuts have the same cost per pound as almonds, we divide $1 by the cost per pound to find out how many pounds Mayela can purchase:
Pounds of walnuts for $1 = $1 / $6.35
Pounds of walnuts for $1 = 0.16 pounds (rounded to two digits after the decimal).
Therefore, Mayela can purchase approximately 0.16 pounds of walnuts for $1.