The ratio of simplification is 0.6:0.12 32:50, 4 / 3: 1.6, 7 / 5: 28 / 15

The ratio of simplification is 0.6:0.12 32:50, 4 / 3: 1.6, 7 / 5: 28 / 15


0.6:0.12=60:12=5:1
32:50=16:25
4/3:1.6=4/3:8/5=20:24=5:6
7/5:28/15=21/15:28/15=21:28=3:4



7.2 is 1.2 more than a quarter of a number. Find the number


(7.2-1.2) △ 1 / 4
=6x4
=24
So the number is 24



Simple calculation 16 / 25 - (14 / 19-9 / 25)


16 / 25 - (14 / 19-9 / 25)
=16 / 25 - 14 / 19 + 9 / 25
=1-14 / 19
=5 out of 19