4:6=8:12
15:18 = 5:6
3 3/10 : 2 1/5 = 80 : 120
5 1/2 : 7 7/32 = 8 3/4 : 6 2/3
15/26 : 1/5 = 3/7 : 26/7
3 18/25 : 62 = 21 1/4 : 40:51
ա․ x:4 = 3:5
x = (3×4):5=12/5=2 2/5
բ․ 6:7=x:10
x = (10×6)/7=60/7= 8 4/7
գ․ 19:3 = y:18
y = (19×18)/3 = 342/3=114
դ․ 25:24 = x:12
x=(25×12) /24=300/24 = 12 2/24
ե․ 2:b = 7 :5
b=(2×5)/7=10/7=1 3/7
զ․ 14:8 = 7: b
b = (8×7)/14 = 56/14= 4
է․ 67/2 = a/200
a = (67×200)/2=13400/2=6700
ը․ 72/y = 38/65
y = (72×65)/38=4680/38
3 1/5 = 16/5 = 3, 2
19520:3,2 = 6100
1 1/2 = 3/2 = 1,5
6100×1,5=9150
9150 դրամ
181
12500:20 = 625
140×100:35=400
770×100:110=700
7/25 x 100 : 7/10=40
Ալեք Մելքոնյան 