to find the elasticity of a good, divide the percentage change in the quantity demanded by the percentage change in the price. review this formula in the formula for finding the percentage changes for prices and for quantity demanded use the formulas to calculate the elasticity of demand in the following cases. identify whether the man is elastic and elastic or unitary elastic. a when the price of a car wash rises from $10 to $11 the number of daily customers drops from 60 to 48. be a dentist with 80 patients cuts his fees for a cleaning from $60 to $54 and attracts two new patients. please help! I posted this question a couple minutes ago and people just took the points! please help!