Question

va rog mult! 20 de puncte și coroana

Answer 1

a) 15% x 25% x 126000 = 15 x 25 x 126000 : 100 : 100 = 4725 dolari

b) a+b+c = 4725 ; b = (a+c)/2 <=> 2b = a+c ; => b+2b = 4725 => 3b =4725

b = 4725 :3 = 1575 dolari

c) c = (2/5) x a => a + 2a/5 = 2 x 1575 <=> 7a = 1575 x 10 => a = 15750/7 =>

a = 2250 dolari

c = 2250 x 2/5 = 4500/5 = 900 dolari

Verificare: a+b+c = 2250+1575+900 = 4725 dolari , corect.