Each pencil costs 1 dollar, each eraser costs 20 cents and each sharpener costs 30 cents. How many different combinations of these three items cost a total of 5 dollars?
Answers
Given : Each pencil costs 1 dollar, each eraser costs 20 cents and each sharpener costs 30 cents.
To find : How many different combinations of these three items cost a total of 5 dollars
Solution:
Pencil cost = 1 $
Eraser cost = 20 cents = 0.2 $
Sharpener Cost = 30 cents 0 .3 $
Cost of 3 Erasers = Cost of 2 Pencils
Total amount = 5 $
Possible combinations :
Pencil Eraser Sharpener
5 0 0
4 2 2
4 5 0
3 1 6
3 4 4
3 7 2
3 10 0
2 0 10
2 3 8
2 6 6
2 9 4
2 12 2
2 15 0
1 2 12
1 5 10
1 8 8
1 11 6
1 14 4
1 17 2
1 20 0
0 1 16
0 4 14
0 7 12
0 10 10
0 13 8
0 16 6
0 19 4
0 22 2
0 25 0
1 + 2 + 4 + 6 + 7 + 9 = 29
29 possible combination
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