Question

a)Calculati media ponderata a numerelor 5 si 1/5 cu ponderile 4 si 5
b)Calculati media aritmetica ponderata a numerelor 1/2,,5/4,,3/5 si 1/6

REPEDE !VA ROG 

Answer 1

a) ( 5*4+(1/5)*5 ) / 4+5 
=20+1 / 9
=21/9
=7/3
b) (1/2+5/4+3/5+1/6) / 4  
=[(120+300+144+40)/240]/4
=(604/240)/4
=151/15