Three colleagues spent a total of $74. Abi spent $7 more than Kimberly and Gillian spent $12 more than Abi.
- How much money did Kimberly spend?
- How much money did Gillian spend?
(a)
Amount that Kimberly spent = 1 u
Amount that Abi spent = 1 u + 7
Amount that Gillian spent = 1 u + 7 + 12 = 1 u + 19
Total amount that they spent
= 1 u + 1 u + 7 + 1 u + 19
= 3 u + 26
3 u + 26 = 74
3 u = 74 - 26
3 u = 48
1 u = 48 ÷ 3 = $16
Amount that Kimberly spent
= 1 u
= 16
(b)
Amount that Gillian spent
= 1 u + 19
= 16 + 19
= $35
Answer(s): (a) $16; (b) $35
