Question

25:x=5:3,4 3,5:42=0,5:x

Answer 1

25/х = 5/3,4
5х = 25×3,4
5х = 85
х = 17
Ответ: 17
3,5/42 = 0,5/х
3,5х = 42 × 0,5
3,5х = 21
х = 6
Ответ: 6

Answer 2

To solve the equations, we need to first understand what the given ratios mean.

The ratio 25:x is equivalent to saying that the first quantity is 25 and the second quantity is x, and the ratio of the first to the second is 5:3.4. In other words:

25/x = 5/3.4

To solve for x, we can cross-multiply and simplify:

25 * 3.4 = 5 * x

85 = x

Therefore, x is equal to 85.

The second ratio given is 3.5:42, which is equivalent to saying that the first quantity is 3.5 and the second quantity is 42, and the ratio of the first to the second is 0.5:x. In other words:

3.5/42 = 0.5/x

To solve for x, we can cross-multiply and simplify:

3.5 * x = 0.5 * 42

x = 6

Therefore, x is equal to 6.