Henry went shopping for a new pair of pants because of a sale. The store was offering a 10% discount. If the price on the tag was 21, what would be the price after the discount but before tax, to the nearest dollar and cent?

Solution

He n ry w e n t s h o pp in g f or a n e w p ai r o f p an t s b ec a u se o f a s a l e . T h e s t ore w a s o ff er in g a 10% d i sco u n t . I f t h e p r i ce o n t h e t a g w a s 21, w ha t w o u l d b e t h e p r i ce a f t er t h e d i sco u n t b u t b e f ore t a x, t o t h e n e a res t d o ll a r an d ce n t ?

Amount after discount : 18.9

Solution steps

Translate the problem into an equation:

x = 21 - 0.1 \cdot 21

x = 21 - 0.1 \cdot 21 : x = 18.9

Amount after discount : 18.9