Simon had
19 as many erasers as Bryan. Bryan had thrice as many erasers as Elijah. If Simon had 56 erasers fewer than Elijah,
- how many erasers did Simon have?
- how many erasers did they have altogether?
(a)
Number of erasers that Simon had = 1 u
Number of erasers that Bryan had = 9 u
Number of erasers that Elijah had = 9 u ÷ 3 = 3 u
Number of erasers that Simon had fewer than Elijah
= 3 u - 1 u
= 2 u
2 u = 56
1 u = 56 ÷ 2 = 28
Number of erasers that Simon had
= 1 u
= 28
(b)
Total number of erasers that they had
= 1 u + 9 u + 3 u
= 13 u
= 13 x 28
= 364
Answer(s): (a) 28; (b) 364
