A file cost $3.50. A pen cost $15.50 more than the file. Yoko spent $208 on such files and pens. She bought twice as many files as pens.
- How many pens did Yoko buy?
- How much money did Yoko spend on the files?
|
Files |
Pens |
Total |
Number |
2 u |
1 u |
|
Value |
3.50 |
19 |
|
Total value |
7 u |
19 u |
208 |
(a)
Cost of a pen
= 15.50 + 3.50
= $19
Total cost of files and pens
= 7 u + 19 u
= 26 u
26 u = 208
1 u = 208 ÷ 26 = 8
Number of pens that Yoko bought
= 1 u
= 8
(b)
Amount that Yoko spent on files
= 7 u
= 7 x 8
= $56
Answer(s): (a) 8; (b) $56