Armani can type 40 words per minute. Joely can type 55 words per minute. If Armani and Joely each type for 30 minutes. About how many more words will Joely type?

Answer 1

#450" words"#

If Armani types #40 ("words")/("minute")# then in #30" minutes"# Armani will type #color(white)("XXX")40("words")/(cancel("minute"))xx30cancel("minutes")=1200" words"#
If Joey types #55 ("words")/("minute")# then in #30" minutes"# Joely will type #color(white)("XXX")55("words")/(cancel("minute"))xx30cancel("minutes")=1650" words"#
In #30" minutes"# Joely will type #color(white)("XXX")1650" words" - 1200" words" = 450" words"# more than Armani.
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Answer 2

Joely will type approximately 450 more words than Armani.

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Answer from HIX Tutor

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.

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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