Question

If 50% of a number is 120 and 80% of the same number is 192, find 30% of that
number.

Answer 1

Answer: the answer is 72

Explanation:

if 50% of a number is 120 then that means its only half of that number so to find out the whole number multiply 120 by 2 which gives you the answer of 240

Now we need to determine 30% of 240 and the procedure explaining it as such

Step 1: In the given case Output Value is 240.

Step 2: Let us consider the unknown value as x.

Step 3: Consider the output value of 240 = 100%.

Step 4: In the Same way, x = 30%.

Step 5: On dividing the pair of simple equations we got the equation as under

240 = 100% (1).

x = 30% (2).

(240%)/(x%) = 100/30

Step 6: Reciprocal of both the sides results in the following equation

x%/240% = 30/100

Step 7: Simplifying the above obtained equation further will tell what is 30% of 240

x = 72%

Therefore, 30% of 240 is 72

I hope this helps

Answer 2

72

Explanation:

You want 30% of a number, given that 50% of it is 120, and 80% of it is 192.

Solution

The 30% you want will be the difference between 80% and 50%:

80% -50% = 30%

192 -120 = 72

30% of the same number is 72.