Change percentage into units.
Fill in the blanks.

Bryan has 30% less stickers than Charlie and
Adam has 20% less stickers than Bryan.

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

(a)
Bryan has 30% less stickers than Charlie.

100% - 30% = 70%
70% = ⁷⁰₁₀₀ = ⁷₁₀
Bryan has ⁷₁₀ as many as stickers as Charlie.

Adam has 20% less stickers than Bryan.

100% - 20% = 80%
80% = ⁸⁰₁₀₀ = ⁴₅

Adam has ⁴₅ as many as stickers as Bryan.

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

(3) Bryan is the repeated identity.

Bryan	Charlie	Adam
7x5	10x5
5x7		4x7
35 u	50 u	28 u

(b)
LCM of 7 and 5 = 35

Number of stickers that Charlie has = 50 u

(c)
Total number of stickers that the children have
= 35 u + 50 u + 28 u
= 113 u

(d)
Difference in the number of stickers between Bryan and Adam
= 35 u - 28 u
= 7 u

Answer(s): (a) 1; (b) 50; (c) 113; (d) 7