Adam has some stickers
He gives away ¹₄ and an additional 75 stickers away to Bryan.
He gives away 10 less than ⁴₉ of the remaining stickers to Chris
and ³₇ of the rest to David.
Adam has 20 stickers left.
How many stickers does he have at first?
Number of stickers that Adam gives to Bryan = ¹₄ of the total + 75
Number of stickers that Adam gives to Chris = ⁴₉ of the remainder - 10
Number of stickers that Adam gives to David = ³₇ of the rest
Number of stickers left = 20


Working backwards.
1 - ³₇ = ⁴₇

⁴₇ of the rest = 20
¹₇ of the rest = 20 ÷ 4 = 5
⁷₇ of the rest = 7 x 5 = 35

1 - ⁴₉ = ⁵₉

⁵₉ of the remainder = 35 - 10 = 25
¹₉ of the remainder = 25 ÷ 5 = 5
⁹₉ of the remainder = 9 x 5 = 45

1 - ¹₄ = ³₄
³₄ of the total = 45 + 75 = 120
¹₄ of the total = 120 ÷ 3 = 40
⁴₄ of the total = 4 x 40 = 160

Number of stickers at first = 160

Answer(s): 160