Calculate remain discount for an amount .

Question

Calculate remain discount for an amount .

Hi, i have a number X . So i have to give total 50% discount for the number . Now please see the situation

For X first we give 30% discount . So now the number is Y and Y= X*70/100 .

Second we have to give the remain discount . But the problem is in this step we have only number Y. and we have to multiply this number by a value so that

Y* new_value= X*50/100

so please help to get the new value .

So i have to Get new_value. and the real question is Y*How much percentage=X*50% . And here Y=X*70/100;

Answer 1

Let the new percentage be $n$

Then $Yn=0.7nx=0.5x$, so $n=\frac{5}{7}\approx71.4$%