To find the total weight of the fruits Jacob purchased, you can add the weights of the grapes and strawberries together.
First, let's convert the mixed numbers to improper fractions:
-
For grapes:
- \( 3 \frac{1}{2} = \frac{7}{2} \) (since \( 3 \times 2 + 1 = 7 \))
-
For strawberries:
- \( 3 \frac{3}{4} = \frac{15}{4} \) (since \( 3 \times 4 + 3 = 15 \))
Now we have:
- Weight of grapes: \( \frac{7}{2} \) pounds
- Weight of strawberries: \( \frac{15}{4} \) pounds
Next, we'll find a common denominator to add these fractions. The least common multiple of 2 and 4 is 4.
Now, convert \( \frac{7}{2} \) to a fraction with a denominator of 4:
\[ \frac{7}{2} = \frac{7 \times 2}{2 \times 2} = \frac{14}{4} \]
Now we can add the two fractions:
\[ \frac{14}{4} + \frac{15}{4} = \frac{14 + 15}{4} = \frac{29}{4} \]
Finally, convert the improper fraction back to a mixed number:
\[ \frac{29}{4} = 7 \frac{1}{4} \]
So, the total weight of grapes and strawberries that Jacob purchased is \( 7 \frac{1}{4} \) pounds.