Question

4/а=16/20; с/8=25/40;

Answer 1

4:а = 16:20
Произведение крайних равно произведению членов пропорции
16а = 4*20
16а = 80
а = 80:16
а = 5


с :8 = 25:40
40с = 25*8
40с= 200
с = 200:40
с = 5

Answer 2

It seems like you've written down two equations involving fractions. Let's solve them step by step.

1. Equation 1: 4/а = 16/20

To solve for 'а', we can cross-multiply: 4 * 20 = а * 16

Simplify the equation: 80 = 16а

Now, divide both sides by 16: а = 80 / 16 а = 5

So, the value of 'а' that satisfies the first equation is 5.

2. Equation 2: с/8 = 25/40

To solve for 'с', cross-multiply again: с * 40 = 8 * 25

Simplify the equation: 40с = 200

Now, divide both sides by 40: с = 200 / 40 с = 5

So, the value of 'с' that satisfies the second equation is 5.

To recap:

• For the first equation, 'а' = 5.
• For the second equation, 'с' = 5.