Explanation

Formula: Amount = Principal _ (1 + r/100)^n

Given:

Amount = 1.44 _ Principal

n = 2 years

Put values:

1.44 _ P = P _ (1 + r/100)^2

Cancel P from both sides:

(1 + r/100)^2 = 1.44

Take square root both sides:

1 + r/100 = 1.2

r/100 = 1.2 - 1 = 0.2

r = 0.2 * 100 = 20

Last verified on 02-09-2026

Explanation

Purchase price = Rs. 23800  

Profit = 6%

Sale price = Purchase price + Profit  

= 23800 + (6% of 23800)  

= 23800 + (0.06 × 23800)  

= 23800 + 1428  

= Rs. 25228

Last verified on 24-08-2026

Explanation

Sales tax = 0% × Rs. 50,000 = Rs. 0.

Therefore, no sales tax is charged when the tax rate is 0%.

Last verified on 06-08-2026

Explanation

Given:

• Profit = Rs. 120
• Profit = 20% of Selling Price (SP)

20% of SP=120
SP=120×100/20​=Rs.600

Now,

$$CP=SP-Profit$$

$$=600-120$$

$$=Rs.480$$

Explanation

Selling Price = Rs. 120
Profit = 20%

$$CP=$$SP×100​ /100+20=120120×100​

=Rs.100

Last updated 24-07-2026 by NA

Explanation

Profit is divided according to Capital × Time.

• A = $20,000 times 24 = 480,000$
• B = $15,000 times 24 = 360,000$
• C = $20,000 times 18 = 360,000$

Ratio:

$$480000:360000:360000=4:3:3$$

Total parts:

$$4+3+3=10$$

B's share:

3/10×25,000=7,500

$$Last\; updated\; on\; 23-07-2026\; by\; NA$$

Explanation

5% of Rs. 1,200 = Rs. 60

Remaining amount = Rs. 1,200 − Rs. 60 = Rs. 1,140.

Last verified on 12-07-2026

Explanation

Selling price = Cost + 10% profit

220 = Cost + 0.10 × Cost

220 = 1.10 × Cost

Cost = 220 / 1.10

= 200

Last verified on 30-03-2026

Explanation

Assume cost price = 100

Marked price = 25% above CP:

$$100+25=125$$

Discount = 10% on 125:

$$10\%\text{ of }125=12.5$$

Selling price:

$$125-12.5=112.5$$

Profit

$$112.5 - 100 = 12.5$$

$$Last\; updated\; question\; NS\; on\; 10\; MAY\; 2026$$

Explanation

Assume originally:

• Bought 100 items for Rs.100
  So, Cost Price (CP) per item = Rs.1

Now buys 10% less:

• 10% less than 100 = 90 items
• Still spends Rs.100

So new CP per item:

CP= 100/90​

Now sells 10% more:

• 10% more than 100 = 110 items

Assume selling rate is Rs.1 per item.

So total Selling Price:

$$SP=110\times 1=110$$

Profit:

$$Profit=SP-CP=110-100=10$$

Profit percentage formula:

$$\text{Profit \%}=$$Profit/ Cost Price ​×100

Substitute values:

10/100​×100=10%

That approach looks tempting, but it ignores that buying fewer changes the cost per item. The correct combined effect is:

Profit %=(110/90​−1)×100

$(110/90-1)\times 100$

$$=left(frac{20}{90}right)times100$$$$=22.22$$

$$Last\; updated\; question\; by\; NS\; on\; 2\; MAY\; 2026$$