Change percentage into units.
Fill in the blanks.

Charlie has 30% less stickers than Adam and
Bryan has 25% less stickers than Charlie.

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

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

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

Bryan has 25% less stickers than Charlie.

100% - 25% = 75%
75% = ⁷⁵₁₀₀ = ³₄

Bryan has ³₄ as many as stickers as Charlie.

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

(3) Charlie is the repeated identity.

Charlie	Adam	Bryan
7x4	10x4
4x7		3x7
28 u	40 u	21 u

(b)
LCM of 7 and 4 = 28

Number of stickers that Adam has = 40 u

(c)
Total number of stickers that the children have
= 28 u + 40 u + 21 u
= 89 u

(d)
Difference in the number of stickers between Charlie and Bryan
= 28 u - 21 u
= 7 u

Answer(s): (a) 1; (b) 40; (c) 89; (d) 7