The combined cost of 0.6 pound of blueberries and 1.8 pounds of clementines is $ 6.87
<u><em>Solution:</em></u>
Given that,
Cost of 1 pound of blueberries = $ 3.98
Cost of 1 pound of clementines = $ 2.49
To find: combined cost of 0.6 pound of blueberries and 1.8 pounds of clementines
<em><u>Let us first find cost of 0.6 pound of blueberries</u></em>
cost of 0.6 pound of blueberries = 0.6 x Cost of 1 pound of blueberries

Thus, cost of 0.6 pound of blueberries is $ 2.388
<em><u>Find cost of 1.8 pounds of clementines</u></em>
cost of 1.8 pound of clementines = 1.8 x cost of 1 pound of clementines

Thus, cost of 1.8 pound of clementines is $ 4.482
<em><u>Find combined cost of 0.6 pound of blueberries and 1.8 pounds of clementines</u></em>
Combined cost = cost of 0.6 pound of blueberries + cost of 1.8 pound of clementines
Combined cost = 2.388 + 4.482 = 6.87
Thus combined cost of 0.6 pound of blueberries and 1.8 pounds of clementines is $ 6.87