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Cubone
@Cubone
November 2021
1
11
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Разделите число:
1) 10 в отношении 3:7:10
2) 14.4 в отношении 1/3 : 1/15 : 0.2
3) 13.5 в отношении 0.2 : 1/6 : 2/15
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Answers & Comments
konik1
1)
10 в отношении 3 :7 : 10
3x : 7x : 10x
=>
3x + 7x + 10x = 10
=>
20x = 10
=>
x = 0,5
1,5 + 3,5 + 5 =10
1,5 : 3,5 : 5
2)
14,4 в отношении 1/3 : 1/15 : 0.2
x/3 : x/15 : 0.2x
=>
x/3 + x/15 + x/5 =
14,4
=>
5x + x + 3x =
15*14,4
=>
9x = 216
=> x =
24
24/3 + 24/15 + 24/5 = 14.4 =>
8 + 1,6 + 4,8 = 14.4 8 : 1,6 : 4,8
3)
13,5 в отношении 0.2 : 1/6 : 2/15
0.2x : x/6 : 2x/15
=>
x/5 + x/6 + 2x/15 = 13,5
=>
3x + 2,5x + 2x = 15*13,5
=>
=>
7,5x = 202,5
=>
x =
27
27/5 +
27/6 + 2*
27/15 = 13,5
=>
5,4 + 4,5 +
3,6 = 13,5
5,4 : 4,5 :
3,6
3 votes
Thanks 8
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Answers & Comments
3x : 7x : 10x => 3x + 7x + 10x = 10 => 20x = 10 => x = 0,5
1,5 + 3,5 + 5 =10 1,5 : 3,5 : 5
2) 14,4 в отношении 1/3 : 1/15 : 0.2
x/3 : x/15 : 0.2x => x/3 + x/15 + x/5 = 14,4 => 5x + x + 3x = 15*14,4 => 9x = 216
=> x = 24
24/3 + 24/15 + 24/5 = 14.4 => 8 + 1,6 + 4,8 = 14.4 8 : 1,6 : 4,8
3) 13,5 в отношении 0.2 : 1/6 : 2/15
0.2x : x/6 : 2x/15 => x/5 + x/6 + 2x/15 = 13,5 => 3x + 2,5x + 2x = 15*13,5 =>
=> 7,5x = 202,5 => x = 27
27/5 + 27/6 + 2*27/15 = 13,5 =>
5,4 + 4,5 + 3,6 = 13,5 5,4 : 4,5 : 3,6