Question

Afla media ponderata a numerelor:
a) 3 si 7,cu ponderile,respective , 2 si 3 ;
b) 4 , 8 si 10, cu ponderile ,respectiv , 2 , 3 , 5 .

Answer 1

a)(3*2+7*3)/2+3=(6+21)/5=27/5
b)(4*2+8*3+10*5)/2+3+5=(8+24+50)/10=82/10=41/5

Answer 2

a) (3*2 + 7 * 3) / (2 + 3) = 27/5 = 5,4

b) (4*2 + 8*3 + 5*10) / (2+3+5) = (8+24+50) / 10 = 82/10 = 8,2