Simplify the following ratios and calculate the ratio. 6.4:4.8 4 / 2:5 4 / 35:3 / 21 4:1 / 2

Simplify the following ratios and calculate the ratio. 6.4:4.8 4 / 2:5 4 / 35:3 / 21 4:1 / 2

6.4：4.8=32：24=4：3=1.333333
4/2：5 =2：5=0.4
4/35：3/21=28：35=4：5=0.8
4：1/2=8：1=8

Simplify the following ratios and calculate the ratio. 6.4:4.82.1m: 1cm of 2:35:4:21:16
6.4:4.8 =
two
1 m: 1 / 2 cm=
4 out of 35: 16 out of 21=

6.4:4.8 =64:48=4:3
4 out of 2.5 = 4 / 2.5 = 40 / 25 = 16
1 m: 1 / 2 cm = 100:0.5 = 200
4 / 35:16 / 21 = 4 / 35:16 / 21 = 4 / 35 × 21 / 16 = 3 / 20

4 / 35:16 / 21 ratio and ratio after simplification

4/35:16/21
=4*21:35*16
=4*3*7:4*4*5*7
=3:20
=3/20

Two steps: simplify the ratio and calculate the ratio; (1) 0.5 hours: 60 minutes; (2) 3 and 1 / 2: 5 and 2 / 3

(1) 0.5 hours: 60 minutes = 0.5:1 = 1:2
The ratio is 0.5
(2) Three and a half: five and two-thirds
=7/2X3/17
=21:34
The ratio is 0.618

The ratio of 24 to half is reduced first and then calculated

48:1

The ratio is 1.5:45, 1:4:8:5, 1.5:2:1, 4:2.5

1.5 to 45, 1 / 4 to 5 / 8, 1.5 to 1 / 2

The first is 1:30
The second is 2:5
The third is 3:1

Mathematical simplification ratio: 5 / 6:5 / 4 ratio: 7 / 12:14 / 3
The process needs to be written

5/6:5/4=2/3
7/12:：14/3=1/8

Simplify ratio and calculate ratio: 1 / 3 hour:

1 / 3 hour: 15 minutes = 20:15 = 4:3

How to calculate 2.25 × [(4-11 / 6) △ 3.25]

2.25 × [(4-11 / 6) △ 3.25] (take the formula × 4, △ 4) as an example,
=9× [ (4-11/6)÷13 ]
=9× [ (24/6-11/6)÷13 ]
=9× [ (13/6)÷13 ]
=9× 6=54