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Answer:
1) 1.05
2) 5.6 Euros
3) 4.25
Step-by-step explanation:
For answer one just times the amount of copy books by 0.35 which is 1.05
0.35x3=1.05
For answer two just divide the amount of 28 euros by thinking of it as change and see how much is left for example 30% of 15 euros is 4.5
For answer three just subtract the amount of cost by 5 euros