First, determine the blueberries needed for only 1/3 cup of jam
for 1/3 cup = for 2/3 cup ÷ 2
for 1/3 cup = 3/4 ÷ 2
for 1/3 cup = 3/4 × 1/2
for 1/3 cup = 3/8
We need 3/8 pounds of blueberries for 1/3 cup of jam
Second, determine the blueberries needed for a cup of jam
a cup means 3/3 cup, so the blueberries needed will be
for 3/3 cup = for 1/3 cup × 3
for 3/3 cup = 3/8 × 3
for 3/3 cup = 9/8
Change it to mixed fraction
9/8 = 1 1/8
For a cup of jam we need 1 1/8 pounds of blueberries
The answer is first option
