Question

Divida 380 em proporcionais a 2 , 5 e 4

Answer 1

a/2 = b/5 = c/4 = ( a +b + c)/ ( 2 + 5 + 4) = 380/11
a/2 = 380/11
11a = 380 * 2
11a =760
a = 760/11 =69,09 ***
b/5 = 380/11
11b = 380 * 5 
11b = 1900
b = 1900/11 = 172,72 ***

c/4 = 380/11
11c = 4 * 380
11c = 1520
c = 1520/11 =138,18 ****