Lucy spent
45 of her money on 14 markers and 9 pens. The cost of each pen is 2 times the cost of each marker. She bought some more markers with
34 of her remaining money. How many markers did Lucy buy altogether?
| 14 markers + 9 pens |
Remaining
amount |
Total
amount |
| 4 p = 32 u |
1 p = 8 u |
5 p |
14
markers |
9
pens |
More markers |
Left |
|
| |
|
3 |
1 |
|
| 14 u |
18 u |
6 u |
|
|
Cost of 1 marker = 1 u
Cost of 1 pen = 2 u
Cost of 14 markers = 14 x 1 u = 14 u
Cost of 9 pens = 9 x 2 u = 18 u
Cost of 14 markers + 9 pens
= 14 u + 18 u
= 32 u
4 p = 32 u
1 p = 32 u ÷ 4 = 8 u
Amount of remaining money that Lucy spent on buying more markers
=
34 x 8 u
= 6 u
Number of markers that Lucy bought with
34 of her remaining money
= 6 u ÷ 1 u
= 6
Total number of markers that Lucy bought
= 14 + 6
= 20
Answer(s): 20
