Someone help please and try give me the working out for all of them or one of them if u give working out for the questions i will give a BRAINLIEST

1) 900/4=225
225*5=1125
900:1125

2) 1000/3=333.33
333.33*7=2333
1,000:2333

3) 200/3= 66.66
66.66*5=333
200:333

4) 600/7=85.7
85.7*8= 686
600:686

13) 120/7=17.1
17.1*3=51
17.1*2=34
120:51:34

14)450/5= 90
90*6= 540
90*7= 620
450:540:620

15) 550/5=110
110*8= 880
110*90= 990
110:880:990

16) 13.86/3= 4.62
4.62*7= 32
4.62*11= 51
13.86:32:51

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Аноним Аноним · Answer 2 · 2018-04-26T06:56:32+02:00

1.
[tex]4x + 5x = 900 \\ 9x = 900 \\ x = 100[/tex]
Ratio = 400 : 500

2.
[tex]3x + 7x = 1000 \\ 10x = 1000 \\ x = 100[/tex]
Ratio = 300 : 700

3.
[tex]3x + 5x = 200 \\ 8x = 200 \\ x = 25[/tex]
Ratio = 75 : 125

4.
[tex]7x + 8x = 600 \\ 15x = 600 \\ x = 40[/tex]
Ratio = 280 : 320

13.
[tex]7x + 3x + 2x = 120 \\ 12x = 120 \\ x = 10[/tex]
Ratio = 70 : 30 : 20

14.
[tex]5x + 6x + 7x = 450 \\ 18x = 450 \\ x = 25[/tex]
Ratio = 125 : 150 : 175

15.
[tex]5x + 8x + 9x = 550 \\ 22x = 550 \\ x = 25[/tex]
Ratio = 125 : 200 : 225

16.
[tex]3x + 7x + 11x = 13.86 \\ 21x = 13.86 \\ x = 0.66[/tex]
Ratio = 1.98 : 4.62 : 7.26

Hope this helps. - M