Adam has 200 stickers.
²₅ of the stickers are sold in the morning.
⁷₁₀ of the remaining stickers are sold in the afternoon.
How many more stickers are sold in the afternoon than what are left?
Fraction of stickers left in the morning
= 1 - ²₅

= ³₅

³₅ of total stickers = ¹⁰₁₀ of remaining stickers

Make the numerators the same.
LCM of 3 and 10 is 30.

^{3 x 10} _{5 x 10} of total stickers = ^{10 x 3}_{10 x 3} of remaining stickers
³⁰₅₀ of total stickers = ³⁰₃₀ of remaining stickers

Total number of stickers at first = 50 u
Total number of stickers after selling some in the morning = 30 u

Number of stickers sold in the morning = 50 u - 30 u = 20 u
Number of stickers sold in the afternoon = 21 u
Number of stickers left = 30 u - 21 u = 9 u

50 u = 200

1 u = 200 ÷ 50 = 4

Number of more stickers sold in the afternoon than what is left
= 21 u - 9 u
= 12 u
= 12 x 4
= 48

Answer(s): 48