Explanation

Girls: 900, Boys: 1100, Total: 2000

Boys passed: 50% of 1100 = 550

Girls passed: 40% of 900 = 360

Total passed: 550 + 360 = 910

Total failed: 2000 - 910 = 1090

Failure percentage: (1090/2000) × 100 = 54.5%

Last verified on 16-01-2026

Explanation

Number of students who filled form for the entrance test = 200

The number of students who appeared in the test = 180

Percent of appeared students who passed = 70%

Percent of appeared students who failed = 100% - 70% = 30%

so, the number of students who failed the test would be

= 30/100 * 180

= 0.3 * 180

= 54

**

ND22-1-2023

Explanation

Formula:  

Percentage = (Present Students / Total Students) × 100

Given:  

Present = 340  

Total = 500

Calculation:  

(340 ÷ 500) × 100 = 0.68 × 100 = 68%

Explanation

SI = Principal × Rate × Time

= 1000 × 0.05 × 2

= 100

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%