Explanation

Kamran's percentage = 458/500 × 100 = 91.6%

Sister's percentage = 559/600 × 100 = 93.17%

Sister's performance is better.

Last verified on 13-03-2026

Explanation

Nisar's percentage = 80/100 = 80%

Score out of 75 = 80% of 75 = 0.8 × 75 = 60

Last verified on 13-03-2026

Explanation

Explanation

Let's denote the present age of A as 3x and B as 4x.

Step 1: Express their ages 10 years ago

A's age 10 years ago = 3x - 10

B's age 10 years ago = 4x - 10

Step 2: Formulate the equation based on the given information

A was half of B's age 10 years ago:

3x - 10 = 1/2 * (4x - 10)

Step 3: Solve the equation

3x - 10 = 2x - 5

3x - 2x = -5 + 10

x = 5

Step 4: Find their present ages

A's age = 3x = 3 * 5 = 15

B's age = 4x = 4 * 5 = 20

Step 5: Calculate the total of their present ages

Total age = 15 + 20 = 35

Last verified on 11-03-2026

Explanation

Let original bill = x

90% of x = 4050

0.9x = 4050

x = 4050 / 0.9

x = 4500

Last verified on 11-03-2026

Explanation

Explanation

Explanation

Let cost price = x

Sales price = x + 5% of x = 1.05x

1.05x = 672

x = 672 / 1.05

x = 640

Last verified on 10-03-2026

Explanation

0.20% = 0.20/100 = 0.002 = 1/500

Last verified on 10-03-2026

Explanation

Cost price = Rs. 80

Desired profit = 20% of 80 = Rs. 16

Selling price = 80 + 16 = Rs. 96

Selling price is 20% less than marked price:

96 = 0.8 × Marked price

Marked price = 96 / 0.8 = Rs. 120

Last verified on 09-03-2026