For every 8 chocolate bars that Kathy has, Erika has 2 more chocolate bars than her. They have 54 chocolate bars altogether. How many chocolate bars does Erika have?
Number of chocolate bars that Erika has in 1 set
= 8 + 2
= 10
Total number of chocolate bars in 1 set
= 10 + 8
= 18
Number of sets
= 54 ÷ 18
= 3
Number of chocolate bars that Erika has
= 3 x 10
= 30
Answer(s): 30