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Popular Word Problems >

An item is regularly priced at 20 . Keiko bought it on sale for 70% off the regular price. How much did Keiko pay?

Solution

implicit derivative

i t e m i s re gu l a r l y p r i ce d a t 20 . Ke ik o b o ug h t i t o n s a l e f or 70% o ff t h e re gu l a r p r i ce . Ho w m u c h d i d Ke ik o p a y ?

Solution

Amount after discount : 6

Solution steps

Translate the problem into an equation:

x = 20 - 0.7 \cdot 20

x = 20 - 0.7 \cdot 20 : x = 6

Amount after discount : 6

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