when we use "increase in" and "increase by"?

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when we use "increase in" and  "increase by"?

asked Sep 18 '11 at 12:35 ddkimhoang New member

1 answer


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"Increase in": description of the aspect of increase (the thing that is increasing)

Examples

Increase in size

Increase in temperature

Increase in distance

Increase in speed

 

You can also use "increase in" when you use 'in' to mean 'throughout' or 'during'

Eg: "We saw an increase (in whatever it is we're discussing) in September."

(The italics represent an implied clause which is not stated explicitly.)

 

"Increase by": a specified value of the increase

Examples

Increase by 10%

Increase by 6.4 degrees

Increase by 9 miles

Increase by 5kph

 

You can also use "increase by" when you mean 'by' to describe a deadline

Eg: "We need to see an increase (in whatever it is we're discussing) by 1st October".

(The italics represent an implied clause which is not stated explicitly.)

link comment answered Sep 19 '11 at 10:10 Siân Harris Expert

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