Fill in the blanks.
Bryan has 25% less stickers than Adam and
Charlie has 20% less stickers than Bryan.

1. Who is the repeated identity? Give the answer in number.  (Eg Bryan = 1; Adam = 2; Charlie = 3)
2. Number of stickers that Charlie has = _____ u
3. Total number of stickers = _____ u
4. Difference in the number of stickers between Adam and Charlie = _____ u

(a)
Change percentage into units.

Bryan has 25% less stickers than Adam.

100% - 25% = 75%
75% = ⁷⁵₁₀₀ = ³₄
Bryan has ³₄ as many as stickers as Adam.

Charlie has 20% less stickers than Bryan.

100% - 20% = 80%
80% = ⁸⁰₁₀₀ = ⁴₅

Charlie has ⁴₅ as many as stickers as Bryan.

Number of Bryan's stickers is compared to the number of Adam's stickers.
Number of Bryan's stickers is compared to the number of Charlie's stickers.

(1) Bryan is the repeated identity.

Bryan	Adam	Charlie
3x5	4x5
5x3		4x3
15 u	20 u	12 u

(b)
LCM of 3 and 5 = 15

Number of stickers that Charlie has = 12 u

(c)
Total number of stickers that the children have
= 15 u + 20 u + 12 u
= 47 u

(d)
Difference in the number of stickers between Adam and Charlie
= 20 u - 12 u
= 8 u

Answer(s): (a) 1; (b) 12; (c) 47; (d) 8