Three colleagues spent a total of $58. Victoria spent $9 more than Opal and Xylia spent $10 more than Victoria.
- How much money did Opal spend?
- How much money did Xylia spend?
(a)
Amount that Opal spent = 1 u
Amount that Victoria spent = 1 u + 9
Amount that Xylia spent = 1 u + 9 + 10 = 1 u + 19
Total amount that they spent
= 1 u + 1 u + 9 + 1 u + 19
= 3 u + 28
3 u + 28 = 58
3 u = 58 - 28
3 u = 30
1 u = 30 ÷ 3 = $10
Amount that Opal spent
= 1 u
= 10
(b)
Amount that Xylia spent
= 1 u + 19
= 10 + 19
= $29
Answer(s): (a) $10; (b) $29
