Erika had some caramel apples. She sold 70% of her caramel apples and gave half of the remainder to her sister. After that, she bought 24 caramel apples and had a total of 36 caramel apples in the end. How many caramel apples did Erika have at first?
Percentage of caramel apples that Erika left after selling 705 of her caramel apples
= 100% - 70%
= 30%

Fraction of caramel apples that Erika had left after giving to her sister
= ¹₂ x 30%
= ³₂₀

Number of caramel apples that Erika had left = 3 u

Number of caramel apples that Erika had in the end = 3 u + 24

3 u + 24 = 36
3 u = 36 - 24
3 u = 12

1 u = 12 ÷ 3 = 4

Total number of caramel apples that Erika had at first
= 20 u
= 20 x 4
= 80

Answer(s): 80