To determine what type of fish Sasha bought, we need to see which combination could equal 34 pounds for a total of $5.40.
First, let's convert the cost into a per-pound basis to compare with the fish prices:
Total cost: $5.40 for 34 pounds makes the average price per pound: \[ \frac{5.40}{34} = 0.1588 \text{ (approximately)} \]
Now, let's look at the prices of each type of fish:
- Salmon: $9.60 per pound
- Whitefish: $7.20 per pound
- Swordfish: $8.40 per pound
- Haddock: $6.90 per pound
Since none of the fish prices is as low as $0.1588, it seems there might be some confusion in the problem, as Sasha cannot buy any kind of fish at those prices for $5.40 at 34 pounds.
Alternatively, if Sasha bought fish at a lower average price per pound, let’s assume that perhaps he bought only haddock, which is the least expensive option at $6.90 per pound:
\[ 34 \text{ lb} \times 6.90 = 234.6 \]
This total is also too high.
However, looking back through the question, it seems that this cost and weight do not correspond to any realistic fish purchase. Therefore, it may be more reasonable to understand that since $5.40 for 34 pounds of fish at any of those prices is impractical, it might be a theoretical question rather than a practical one.
In conclusion, none of the fish can be chosen based on the average unit cost derived from the total weight of fish Sasha supposedly bought. If the intention was to point towards haddock, then haddock is likely a hypothetical solution since it is the least expensive, but the figures do not correlate accurately with fish prices given.
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