If 50% of a number is 70 and 80% of the same number is 112, find 30% of that number. pls i need fast *NO LINKS*

42

Step-by-step explanation:

It's just saying that 1/2 * x = 70, and if we multiply both sides by 2, we get

x=140.

we check if that number is true by finding 80% of 140.

4/5 * 140 = 112. So that means 140 is the number we want

30% of 140 is 3/10 * 140, which is 420/10, which is 42

answer: true

step-by-step explanation: