40% is the answer for the quantity of percentage
X/30=15/100. Cross multiply to find x.
Answer:
10,000
Step-by-step explanation:
Let
x-------> the first number
y-------> the second number
we know that

equation 1

equation 2
substitute the equation 1 in equation 2
![[-5-y]*y=-90 \\ -5y- y^{2} =-90 \\ y^{2} +5y-90=0](https://tex.z-dn.net/?f=%5B-5-y%5D%2Ay%3D-90%20%5C%5C%20-5y-%20y%5E%7B2%7D%20%3D-90%20%5C%5C%20y%5E%7B2%7D%20%2B5y-90%3D0)
using a graphical tool to resolve the second order equation
see the attached figure
the numbers are-12.3117.311
x=2. -5/6 have a great rest of your day