Ben has thrice as many coins as Cody. Cody has 11 more coins than Eric. They have a total of 104 coins.
- How many coins does Ben have?
- How many coins does Eric have?
(a)
Number of coins that Cody has = 1 u
Number of coins that Eric has = 1 u - 11
Number of coins that Ben has = 3 u
Total number of coins
= 1 u + 1 u - 11 + 3 u
= 5 u - 11
5 u - 11 = 104
5 u = 104 + 11
5 u = 115
1 u = 115 ÷ 5 = 23
Number of coins that Ben has
= 3 u
= 3 x 23
= 69
(b)
Number of coins that Eric has
= 1 u - 11
= 23 - 11
= 12
Answer(s): (a) 69; (b) 12
