Adam has some stickers
He gives away ¹₃ and an additional 10 stickers to Bryan.
He gives away ⁵₈ of the remainder and 13 more stickers to Chris
and ²₅ of the rest to David.
Adam has 12 stickers left.
How many stickers does he have at first?
Number of stickers that Adam gives to Bryan = ¹₃ of the total + 10
Number of stickers that Adam gives to Chris = ⁵₈ of the remainder + 13
Number of stickers that Adam gives to David = ²₅ of the rest
Number of stickers left = 12


Working backwards.
1 - ²₅ = ³₅

³₅ of the rest → 12
¹₅ of the rest → 12 ÷ 3 = 4
⁵₅ of the rest → 5 x 4 = 20

1 - ⁵₈ = ³₈

³₈ of the remainder = 13 + 20 = 33
¹₈ of the remainder = 33 ÷ 3 = 11
⁸₈ of the remainder = 8 x 11 = 88

1 - ¹₃ = ²₃
²₃ of the total = 88 + 10 = 98
¹₃ of the total = 98 ÷ 2 = 49
³₃ of the total = 3 x 49 = 147

Number of stickers at first = 147

Answer(s): 147