Hilda spent
37 of her money on 9 highlighters and 6 post-it pads. The cost of one post-it pad was thrice the cost of one highlighter. She bought some more post-it pads with
16 of her remaining money. How many post-it pads did Hilda buy altogether?
9 highlighters and
6 post-it pads |
Remaining amount |
| 3x3 |
4x3 |
| |
More post-it pads |
Left |
| |
1x2 |
5x2 |
| 9 p |
2 p |
10 p |
Cost of 1 highlighter = 1 u
Cost of 1 post-it pad = 3 u
Cost of 9 highlighters = 9 x 1 u = 9 u
Cost of 6 post-it pads = 6 x 3 u = 18 u
Total cost of 9 highlighters and 6 post-it pads
= 9 u + 18 u
= 27 u
9 p = 27 u
1 p = 27 ÷ 9 = 3 u
Amount that Hilda used to buy more post-it pads
= 2 p
= 2 x 3 u
= 6 u
Number of more post-it pads that Hilda bought
= 6 u ÷ 3 u
= 2
Total number of post-it pads that Hilda bought
= 6 + 2
= 8
Answer(s): 8
