Question

Find the value of x if 20:x=4:5

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Answer 1

The value of x = 25

Given :

20 : x = 4 : 5

To find :

The value of x

Solution :

Step 1 of 2 :

Write down the given equation

Here the given equation is

20 : x = 4 : 5

Step 2 of 2 :

Find the value of x

20 : x = 4 : 5

$\displaystyle \sf{ \implies \frac{20}{x} = \frac{4}{5} }$

$\displaystyle \sf{ \implies 4x = 20 \times 5}$

$\displaystyle \sf{ \implies x = \frac{20 \times 5}{4} }$

$\displaystyle \sf{ \implies x = 25}$

Hence the required value of x = 25

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Answer 2

Answer:

The value of x if 20:x=4:5 is 25.

Step-by-step explanation:

Given:
20:x=4:5

To find: The value of x

Solution:
20:x=4:5

∴$\frac{20}{x}=\frac{4}{5}$

We can simply cross multiply the terms to find the value of x.

To cross multiply, shift 20 from the numerator to the denominator after the equals to sign.

∴$\frac{1}{x}= \frac{4}{5*20}$

∴$x=\frac{5*20}{4}$

∴$x=5*5$

∴$x=25$

Therefore, the value of x is 25.