Albert had 205 erasers less than Tina. Given that they have a total of 637 erasers,
- How many erasers did Tina have?
- How many erasers did Albert have?
(a)
Number of erasers that Tina had = 1 u
Number of erasers that Albert had = 1 u - 205
Total number of erasers
= 1 u + 1 u - 205
= 2 u - 205
2 u - 205 = 637
2 u = 637 + 205
2 u = 842
1 u = 842 ÷ 2 = 421
Number of erasers that Tina had
= 1 u
= 421
(b)
Number of erasers that Albert had
= 1 u - 205
= 421 - 205
= 216
Answer(s): (a) 421; (b) 216
