Mav has a loyalty card good for a 11% discount at her local pharmacy. What would her total in dollars and cents be, after the discount and before tax, if the total cost of all the items she wants to buy is 23? Round to the nearest cent.

الحلّ

M a v ha s a l oy a lt y c a r d g oo d f or a 11% d i sco u n t a t h er l oc a l p ha r ma cy . Wha t w o u l d h er t o t a l in d o ll a rs an d ce n t s b e, a f t er t h e d i sco u n t an d b e f ore t a x, i f t h e t o t a l cos t o f a ll t h e i t e m s s h e w an t s t o b u y i s 23 ? R o u n d t o t h e n e a res t ce n t .

Amount after discount : 20.47

خطوات الحلّ

Translate the problem into an equation:

x = 23 - 0.11 \cdot 23

x = 23 - 0.11 \cdot 23 : x = 20.47

Amount after discount : 20.47