Explanation

5000m is represented by 100cm

Therefore, 1m will be represented by 100÷5000cm

Therefore,750m will be represented by 100÷5000×750=15cm.

Explanation

= 20 percent *820 

= ( 20:100)*820

= ( 20*820):100 

= 16400:100

= 164

20 percent of 820 is 164

Explanation

Workers: 25

Days: 30

Workers: 15

Days: 50

Explanation

20% can be written as a fraction:

20% = 20/100 = 1/5

Explanation

1. Increase by 20%:

   $$100+20\%\text{ of }100=100+20=120$$

2. Apply a 25% discount on the increased price:

   $$25$$

So, the final price is 90, and the original was 100.

3. Net percentage change:

   $$frac{90 - 100}{100} times 100 = -10$$

Explanation

(50/100) x 30 + (50/100) x40 = 35

Explanation

To determine the overall percentage gain or loss in the transaction, we first need to establish the cost prices of the two chairs and then calculate the net gain or loss.

**Chair 1:**

- Selling Price (SP) = Rs. 1,200

- Gain = 20%

LetC_1 be the cost price of the first chair.

Since he gained 20%, we use the formula for the selling price:

SP = C_1 + (0.20 times C_1

1,200 = 1.20 times C_1

C_1 = frac{1,200}{1.20} 

C_1 = 1,000 

So, the cost price of the first chair is Rs. 1,000.

**Chair 2:**

- Selling Price (SP) = Rs. 1,200

- Loss = 20%

Let ( C_2 ) be the cost price of the second chair.

Since he lost 20%, we use the formula for selling price:

SP = C_2 - (0.20 times C_2)

1,200 = 0.80 times C_2

C_2 = frac{1,200}{0.80}

 C_2 = 1,500 

So, the cost price of the second chair is Rs. 1,500.

**Total Cost Price and Total Selling Price:**

- Total Cost Price =  C_1 + C_2 = 1,000 + 1,500 = 2,500 

- Total Selling Price = Rs. 1,200 + Rs. 1,200 = Rs. 2,400

**Net Loss:**

text{Net Loss} = text{Total Cost Price} - text{Total Selling Price} 

ext{Net Loss} = 2,500 - 2,400 = 100 

**Percentage Loss:**

text{Percentage Loss} = left( frac{text{Net Loss}}{text{Total Cost Price}} right) times 100

text{Percentage Loss} =  left(  frac{100}{2,500}  right)  times 100 

text{Percentage Loss} = 4% 

Explanation

Total earning: 2000

25% of 2000 = 500

2000 - 500 = 1500

AGM 08-01-2023

Explanation

v=s/t s=vt=36*20*1000/3600 s=200

******

RY 15-01-2023

Explanation

20% of 150 = (20/100) × 150 = 0.2 × 150 = 30