Sagot :
47-20=27 from the two continents
27/3=9, the ratio is 2:1 so there is 3 in total
2*9=18= African
1*9=9= Asian
20=European
27/3=9, the ratio is 2:1 so there is 3 in total
2*9=18= African
1*9=9= Asian
20=European
Christina has 20 stamps from Europe, 18 stamps from Africa, and 9 stamps from Asia.