Question

а) x : 4/25 = 3/4 : 4/5 б) 7 4/5 : 2 3/5 = 4 1/2 : y в) 15.04 : 2.688= m : 26.88 решите

Answer 1

а) х : 4/25 = 3/4 : 4/5;
х * 25/4 = 3/4;
25х/4 = 3;
25х = 3;
х = 3/25 = 0,12.
б) 74/5 : 23/5 = 41/2 : у;
74/5 * 5/23 = 41/2 * 1/у;
74/23 = 41/2у;
148у = 943;
у = 943/148 ≈ 6,4.
в) 15,04 : 2,688 = m : 26,88;
m = (15,04 * 26,88)/2,688 = 150,4