4/5=4:5*100=80%
5/4=5:4*100=125%
3/4=3:4*100=75%
13/25=13:25*100=52%
17/20=17:20*100=85%
=================================
1)50=8000/160
2)50=7500/150
3)8000=240000/30
4885 на 4 1
16247 на 8 7
15037 на 5 2
16248 на 8 0
60185 на 6 5
182734 на 9 7
21283 на 7 3
182736 на 9 0
А) 3 5/16 + 1/4 -2 1/16= 3 5/16 + 4/16 - 2 1/16 = 3 9/16 - 2 1/16= 1 8/16 = 1 1/2= 1,5
Б) 1/8 + 2 3/5 + 2 7/8= 1/8 + 13/5 + 23/8 = 5+104+115/40=224/40=5 24/40=
5 12/20 = 5 6/10 = 5,6