IBM should lower their prices by 4% in order to increase sales by 5%.
The price elasticity of a good is calculated by the formula:
Price elasticity = %Change in quantity demanded / %Change in price
If the company needs to increase its sales, it needs to reduce its prices because its negative price elasticity means that it needs to reduce prices to increase sales and vice versa.
We have the price elasticity and the change in quantity demanded required (5%) so we can find out the percentage reduction price required:
-1.25 = 5% / Change in price
Change in price x -1.25 = 5%
Change in price = 5% / -1.25
Change in price = -4%
In conclusion, IBM needs to reduce their prices by 4% to sell by 5% more.
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