A dress on sale in a shop is marked at $D. During the discount sale its price is reduced by 55%. Staff are allowed a further 50% reduction on the discounted price. If a staff member buys the dress what will she have to pay in terms of D ? Choose the correct choice from the following:  A) 0.275D  B) 0.225D  C) 0.265D  D) 0.245D  E) 0.205D
Effective discount = a + b + ab/100 = - 55 - 50 + (-55)(-50)/100 = 77.5   Sale price = D * ( 1 - 77.5/100)   Sale price = .225 * D   Answer (0.225D)
<result>B</result>
A dress on sale in a shop is marked at $D. During the discount sale its price is reduced by 55%. Staff are allowed a further 50% reduction on the discounted price. If a staff member buys the dress what will she have to pay in terms of D ?