Explanation

To find 50% of 55:

50% of 55 = 0.5 * 55

= 27.5

Explanation

To calculate the compound interest, we need to calculate the interest for each year and add it to the principal.

Year 1:

Principal = Rs. 1875

Rate = 4%

Interest = (1875 x 4)/100 = Rs. 75

Amount = Principal + Interest = 1875 + 75 = Rs. 1950

Year 2:

Principal = Rs. 1950 (amount after 1st year)

Rate = 8%

Interest = (1950 x 8)/100 = Rs. 156

Amount = Principal + Interest = 1950 + 156 = Rs. 2106

Now, let's calculate the compound interest:

Compound Interest = Amount - Principal = 2106 - 1875 = Rs. 231

Explanation

To find the selling price after a 15% discount, you can calculate 15% of the original price (Rs. 2500) and subtract that amount from the original price.

15% of Rs. 2500 = (15/100) x 2500 = Rs. 375

Now, subtract Rs. 375 from the original price:

Rs. 2500 - Rs. 375 = Rs. 2125

So, the selling price after the discount is indeed Rs. 2125.

Explanation

5.2% of 500 = (5.2 / 100) × 500 = 26

It’s a direct percentage calculation.

Explanation

1/50 = 2/100

= 2%

Explanation

let the son’s age be “x”

fathers age=2x

son’s age before 20 years = x-20

father’s age before 20 years= 12(x-20)

2x-20=12x-240

-20+240=12x-2x

220=10x

x=22

son’s age=22

father’s age=44

**

ND22-1-2023

Explanation

750000*10/100= 7500

Explanation

Zakat on gold is 2.5% of the total gold value.

Let x be the total gold in tolas.

• Zakat formula:
  (2.5/100) × (60,000 × x) = 11,000

Solving for x:

• 0.025 × 60,000 × x = 11,000
• 1,500x = 11,000
• x = 11,000 / 1,500
• x = 7.33 tola

Thus, Neelam has 7.33 tola gold.

Explanation

Selling price = Rs. 9 per Kg (at a loss of 20%)

Cost price = 9 / (1 - 0.20) = 9 / 0.80 = Rs. 11.25 per Kg

To make a profit of 5%:

Selling price = 11.25 x 1.05 = Rs. 11.81 per Kg

So, the correct answer is 11.81.

Explanation