Question

Urgent!!!!!!Dau coroana!!!!!!!

Answer 1

Răspuns

Explicație pas cu pas:

a) regula de trei simpla ;

65____100%

13____  p = 13x100/65 = 20% ;

b) p = 24x100/96 =  25% ;

c) P = 9x100/72 = 12,5%

d) p = 21x100/140 = 15% ;

e) p = 12x100/300 = 4% ;

f) p = 52x100/800 = 6,5% ;