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Ian earns £420 a week after a 5% rise.
What was his pay before?

Sagot :

Sanjnaid
420 - (420 * 5/100)
420 - 21
399 euro was his pay before
It turns out that 5% of 400 is 20.

(1/20)*400=20.

So Ian was being paid £400 a week before he was given a pay rise.

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