If 12 key chains cost $9, then 20 key chains cost $
Mathematics · High School · Mon Jan 18 2021
llm
Answered on
Given :
Cost of 12 key chains = $9
So, cost of 1 key chains = $9/12
= $3/4
Now, cost of 12 key chains = $3/4 × 20
= $15
Thus, cost of 20 key chains is $15