A dress on sale in a shop is marked at $D. During the discount sale its price is reduced by 15%. Staff are allowed a further 10% reduction on the discounted price. If a staff member buys the dress what will she have to pay in terms of D ?
Choose one.
A) 0.75D B) 0.76D C) 0.765D D) 0.775D E) 0.805D
Successive doscounts = - a - b +ab/100   Putting the values,   Total discount = -15 - 10 + 150/100 = -25 + 1.5 = 23.5% discount   Hence the final price of the dress = D - 0.235D = 0.765D   0.765Dorrect Option: 0.765D
<result>C</result>
A dress on sale in a shop is marked at $D. During the discount sale its price is reduced by 15%. Staff are allowed a further 10% reduction on the discounted price. If a staff member buys the dress what will she have to pay in terms of D ?