To calculate the amount after a 45% increase, you can use the following formula:
\[ \text{New Amount} = \text{Original Amount} + \left( \text{Original Amount} \times \text{Percentage Increase} \right) \]
In this case, the original amount is £2000 and the percentage increase is 45% (or 0.45 in decimal form).
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Calculate the increase:
\[ 2000 \times 0.45 = 900 \] -
Add the increase to the original amount:
\[ 2000 + 900 = 2900 \]
Therefore, £2000 would amount to £2900 after a 45% increase.