# The largest yellowfin tuna caught by fishers weighed 387 pounds. The largest grouper caught weighed 436 pounds. About how much more did the grouper weigh than the yellowfin tuna?

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The grouper is about 50 pounds heavier than the tuna.

The key word in this question is "about".

We could find the difference using the exact weights,but in an informal conversation we generally round off to easy values.

The tuna weighed about 390 pounds and the grouper about 440 pounds.

The difference is 440-390 = 50 pounds

The grouper is about 50 pounds heavier than the tuna.

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The grouper weighed 49 pounds more than the yellowfin tuna.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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