Change percentage into units.
Fill in the blanks.
Charlie has 25% less stickers than Bryan and
Adam has 30% less stickers than Charlie.
- Who is the repeated identity? Give the answer in number. (Eg Adam = 1; Bryan = 2; Charlie = 3)
- Number of stickers that Bryan has = _____ u
- Total number of stickers = _____ u
- Difference in the number of stickers between Charlie and Adam = _____ u
(a)
Charlie has 25% less stickers than Bryan.
100% - 25% = 75%
75% =
75100 =
34 Charlie has
34 as many as stickers as Bryan.
Adam has 30% less stickers than Charlie.
100% - 30% = 70%
70% =
70100 =
710 Adam has
710 as many as stickers as Charlie.
Number of Charlie's stickers is compared to the number of Bryan's stickers.
Number of Charlie's stickers is compared to the number of Adam's stickers.
(3) Charlie is the repeated identity.
Charlie |
Bryan |
Adam |
3x10 |
4x10 |
|
10x3 |
|
7x3 |
30 u |
40 u |
21 u |
(b)
LCM of 3 and 10 = 30
Number of stickers that Bryan has = 40 u
(c)
Total number of stickers that the children have
= 30 u + 40 u + 21 u
= 91 u
(d)
Difference in the number of stickers between Charlie and Adam
= 30 u - 21 u
= 9 u
Answer(s): (a) 1; (b) 40; (c) 91; (d) 9