Explanation

Given:

x - 4 = 11

Add 4 to both sides:

x = 15

Now, find x - 8:

x - 8 = 15 - 8

= 7

Explanation

8 years ago, Hyder's age was x - 8.

7 years from now, Hyder's age will be x + 7.

According to the problem:

x + 7 = 2(x - 8)

Simplify the equation:

x + 7 = 2x - 16

Add 16 to both sides:

x + 23 = 2x

Subtract x from both sides:

23 = x

Explanation

Given:

x + y = 6

y + z = 7

z + x = 9

Add the three equations:

2(x + y + z) = 22

Divide by 2:

x + y + z = 11

The average of x, y, and z is:

(x + y + z)/3 = 11/3

Explanation

Given:

x² - y² = 28

x - y = 8

Factor the first equation:

(x - y)(x + y) = 28

Substitute x - y = 8:

8(x + y) = 28

Divide by 8:

x + y = 28/8

x + y = 3.5

The average of x and y is:

(x + y)/2 = 3.5/2 = 1.75

Explanation

Given:

3/4 of the police employees are not graduates.

This means:

1/4 of the police employees are graduates.

To find the ratio of graduates to non-graduate employees:

Graduates : Non-graduates = 1/4 : 3/4

Simplify the ratio:

Graduates : Non-graduates = 1 : 3

Explanation

To compare the fractions, convert them to equivalent decimals:

2/3 ≈ 0.67

5/8 ≈ 0.63

13/20 ≈ 0.65

Now, arrange the decimals in ascending order:

0.63, 0.65, 0.67

The corresponding fractions in ascending order are:

5/8, 13/20, 2/3

Explanation

Asian's weight increased by 25% from 2005 to 2009.

This means his weight in 2009 is 125% of his weight in 2005:

Weight in 2009 = 1.25 × Weight in 2005

Given his weight in 2009 is k kilograms:

k = 1.25 × Weight in 2005

To find his weight in 2005:

Weight in 2005 = k / 1.25 = 0.8k

Since the question asks for his weight in 2004, and we don't have any information about changes in 2004:

Weight in 2004 is assumed to be the same as Weight in 2005.

Explanation

Violence means تشدد

Explanation

Guarantee means ضمانت

Explanation

The police must collect enough evidence to ensure his conviction.

پولیس کو اس کی سزا کو یقینی بنانے کے لیے کافی شواہد اکٹھے کرنے چاہئیں۔

Collect means gathering evidence systematically for a case.