If 50% of a number is 20%,what is 75% of the number?

30+20=50 so 75-30=45

0.5x = 0.2

x = 0.2 / 0.5

x = 0.4

0.75 * 0.4 = 0.3

To find out what 75% of a number is, we first need to determine the actual value of the number. From the given information that 50% of the number is 20%, we can calculate the number itself.

Let's assume the number as 'x'.

We know that 50% of the number is 20%. So, we can write it as:

(50/100) * x = 20

Simplifying this equation, we get:

0.5 * x = 20

Now, we can solve for 'x' by dividing both sides of the equation by 0.5:

x = 20 / 0.5

x = 40

Therefore, the number is 40.

Now, to find 75% of this number, we will multiply it by 75% or 0.75. Mathematically, we can express it as:

75% of 40 = (75/100) * 40

Simplifying this equation, we get:

0.75 * 40 = 30

So, 75% of the number 40 is 30.

In conclusion, 75% of the number is 30.