Fill in the blanks with units (Eg 1 u) or unit equations (Eg 1 u + 2).
Adam and Bryan have 120 beads.
Adam has 90 less beads than Bryan.
- Number of beads that Adam has = _____
- Number of beads that Bryan has = _____
- Total number of beads = _____
- 1 u = _____
Choose the person who has less beads to be 1 u.
Adam has 90 less beads than Bryan.
So, Adam has less beads.
(a)
Number of beads that Adam has = 1 u
(b)
Number of beads that Bryan has = 1 u + 90
(c)
Total number of beads
= 1 u + 1 u + 90
= 2 u + 90
(d)
Total number of beads = 120
2 u + 90 = 120
2 u = 120 - 90 = 30
1 u = 30 ÷ 2 = 15
Answer(s): (a) 1 u; (b) 1 u + 90; (c) 2 u + 90; (d) 15