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Sagot :


1) 30€ = 100%
x € = 40%
40*30/100 = 12€
30-12= 18€

2) a. 66,1% = 20700000
100% = x
100*20700000/66,1 = 31316187,6
b. 47500000 = 100%
20700000 = x %
20700000*100/47500000 = 43,6%

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