Explanation

To find 25 percent of 400, you can calculate it by multiplying 400 by 0.25 (which represents 25 percent in decimal form):

25% of 400 = 0.25 * 400 = 100

Explanation

Let's call the marked price "x".

Since Saba got a 30% discount, she paid 70% of the marked price (100% - 30% = 70%).

The amount she paid is Rs. 6300, so:

70% of x = 6300

0.7x = 6300

x = 6300 / 0.7

x = 9000

Explanation

Explanation

To find the number: 15 ÷ 0.20 = 75

So, 15 is 20% of 75.

Explanation

= (25/100)*25

= (25*25)/100

= 625/100

= 6.25

Explanation

To find the percent decrease:

Original temperature = 88°F

New temperature = 77°F

Decrease = 88 - 77 = 11°F

Percent decrease = (Decrease / Original temperature) × 100

= (11 / 88) × 100

= 12.5%

Explanation

Since a 20% discount reduced the price to Rs. 100:

x - (20% of x) = 100

To find 20% of x, multiply x by 0.20:

x - 0.20x = 100

Combine like terms:

0.80x = 100

Divide by 0.80:

x = 125

Explanation

25 = 125% of x

To convert the percentage to a decimal, divide by 100:

25 = 1.25x

Now, divide both sides by 1.25 to solve for x:

x = 25 / 1.25

x = 20

So, the correct answer is: 20

Explanation

5% of 16,000 = 800, so increase = 800.

New population = 16,000 + 800 = 16,800.

A percentage increase means adding the calculated percent value to the original number.

Explanation

To find the number, we can set up the equation:

Let x be the number.

Given that 40% of the number is 24:

0.40 × x=24

To solve for x, we divide both sides by 0.40: 

x = 24/0.40

x =60

So, the number is 60.

Therefore, the correct answer is 60.