1。 In addition to 1.5, 10,1.2,8 can also be combined with (0.96 or 20/3). How many figures can you write that meet the requirements?

10: 1.2=8:0.96

10: 1.2=20/3:8

Besides 1.5, you can write two more.

2。 5 :8=( 15 ):24 = 25 :( 40 )=( 62.5)%

3。 If A × 4=B × 5, then a: b = (5): (4)

4。 A × 7=B ÷2, then a: b = (0.5): (7) =1:14.