Question

Mr. Yang purchased 5 pounds of grapefruit for $4.90. At this price, how much will 7 pounds of grapefruit cost?
A.
$0.98
B.
$3.50


C.
$6.86


D.
$7.98

Answer 1

To determine how much 7 pounds of grapefruit will cost, we first need to find the cost per pound of grapefruit. Mr. Yang purchased 5 pounds for $4.90.

First, we calculate the cost per pound:

\[
\text{Cost per pound} = \frac{\text{Total cost}}{\text{Total pounds}} = \frac{4.90}{5} = 0.98 \text{ dollars per pound}
\]

Next, we find the cost for 7 pounds:

\[
\text{Cost for 7 pounds} = \text{Cost per pound} \times \text{Number of pounds} = 0.98 \times 7
\]

Calculating that:

\[
0.98 \times 7 = 6.86
\]

Therefore, the cost for 7 pounds of grapefruit is **$6.86**.

So the correct answer is **C. $6.86**.