Question

0,5 : x = 15 : 2,4; 0,1 : 2 = х : 5/7; 12,3/6 = x/4; 2,5/4 = 11/2x;

Answer 1

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Answer 2

To solve these equations, let's go through each one step by step:

1. 0.5 : x = 15 : 2.4 We can cross-multiply to get rid of the ratio notation: 0.5 * 2.4 = 15 * x 1.2 = 15x Divide both sides by 15: x = 1.2 / 15 x ≈ 0.08

2. 0.1 : 2 = x : 5/7 Cross-multiply: 0.1 * (5/7) = 2 * x 0.5/7 = 2x Divide both sides by 2: x = (0.5/7) / 2 x = 0.5/14 x ≈ 0.036

3. 12.3/6 = x/4 Cross-multiply: 12.3 * 4 = 6 * x 49.2 = 6x Divide both sides by 6: x = 49.2 / 6 x ≈ 8.2

4. 2.5/4 = 11/(2x) Cross-multiply: 2.5 * (2x) = 4 * 11 5x = 44 Divide both sides by 5: x = 44 / 5 x = 8.8

So the solutions to the equations are:

1. x ≈ 0.08
2. x ≈ 0.036
3. x ≈ 8.2
4. x = 8.8