Explanation

x + y = 30 ... (Equation 1)

x - y = 8 ... (Equation 2)

We can solve these equations by adding them together, which eliminates y:

2x = 38

Dividing both sides by 2 gives us:

x = 19

Now that we have x, we can find y by substituting x into Equation 1:

19 + y = 30

Subtracting 19 from both sides gives us:

y = 11

Now that we have both x and y, we can find their product:

Product = x * y

= 19 * 11

= 209

Explanation

• 30% of 100 = 30
• 3% of 1000 = 3/100 × 1000 = 30
• So, 30% of 100 is equal to 3% of 1000.

Explanation

729 = 27 × 27

√729 = √(27 × 27)

√729 = 27

Explanation

• 3 + 2 = 5
• 5+ 2 = 7
• 7+ 3= 10
• 10 + 2 = 12
• 12 + 2 = 14
• 14+ 10 = 24
• 24 + 2 = 26
• 26 + 2 = 28
  

Explanation

A hexagon is a polygon with 6 sides.

It has 6 angles, one at each vertex.

It also has 6 vertices.

Explanation

Let X students go to school so

X= 42% of 550

X= 42/100 x 550

X= 231

Explanation

2/?     =     ?/50

2/10   =    10/50

1/5     =    1/5

The answer is equal by putting value 10.

Explanation

total students = 25

failed = 4

passed students = 25-4 = 21

percentage of pass = 25 is (100%)

failed percentage = 25÷4 = 6.2 %

passed percentage is = 21/25 × 100 = 84%

Explanation

Given:

Increment in number = 20% of the number

Decrement in number = 20% of the new number

Concept used:

Net increase or decrease percent = {(Original number or Final number) - (Final number or original number) ÷ Original number} × 100

Calculation:

Let the original number be 100

When the number is increased by 20%

New Number = 100 + 20% of 100

⇒ 100 + 20

⇒ 120

Now, the number is decreased by 20%

Final number = New number – 20% of new number

⇒ 120 – 20% of 120

⇒ 120 – 24

⇒ 96

∴ Net Decrease in percentage = { (100 – 96) / 100} × 100

⇒ {4/100} × 100

⇒ 4%

∴ The net decrease percentage is 4%

Explanation

Abdur Rehman Chughtai was a renowned Pakistani painter.

He is known for his distinctive Mughal-inspired artistic style.

He is also notable for designing Pakistan's first postage stamp in 1947.