Olivia spent
35 of her money on 6 pens and 7 correction tapes. The cost of one correction tape was thrice the cost of one pen. She bought some more correction tapes with
16 of her remaining money. How many correction tapes did Olivia buy altogether?
6 pens and
7 correction tapes |
Remaining amount |
| 3x3 |
2x3 |
| |
More correction tapes |
Left |
| |
1x1 |
5x1 |
| 9 p |
1 p |
5 p |
Cost of 1 pen = 1 u
Cost of 1 correction tape = 3 u
Cost of 6 pens = 6 x 1 u = 6 u
Cost of 7 correction tapes = 7 x 3 u = 21 u
Total cost of 6 pens and 7 correction tapes
= 6 u + 21 u
= 27 u
9 p = 27 u
1 p = 27 ÷ 9 = 3 u
Amount that Olivia used to buy more correction tapes
= 1 p
= 1 x 3 u
= 3 u
Number of more correction tapes that Olivia bought
= 3 u ÷ 3 u
= 1
Total number of correction tapes that Olivia bought
= 7 + 1
= 8
Answer(s): 8
