Bobby had some stickers. He gave ²₃ of his stickers to Mark and bought 4 new stickers. After that, he gave ³₅ of his remaining stickers to his cousin and bought another 7 new stickers. In the end, Bobby had 29 stickers.

1. How many stickers did Bobby give to his cousin?
2. How many stickers did Bobby have at first?

(a)
Fraction of  his remaining stickers after he gave to his cousin
= 1 - ³₅
= ²₅

²₅ of his remaining stickers = 29 - 7 = 22
¹₅ of his remaining stickers = 22 ÷ 2 = 11
³₅ of his remaining stickers = 3 x 11 = 33

Number of stickers that Bobby gave to his cousin = 33

(b)
⁵₅ of his remaining stickers = 5 x 11 = 55

Fraction of his total stickers after he gave to Mark
= 1 - ²₃
= ¹₃

¹₃ of his total stickers = 55 - 4 = 51
³₃ of his total stickers = 3 x 51 = 153

Number of stickers that Bobby had at first = 153 

Answer(s): (a) 33; (b) 153