Question 1085887
i believe you mean 75% of y.


i read the problem as:


if 30% of 50% of x is equal to 60% of y minus 75% of y, then what is the value of x in terms of y.


30% of 50% of x is equal to .3 * .5 * x which is equal to .15 * x.


60% of y minus 75% of y is equal to .6 * y - .75 * y which is equal to -.15 * y.


your equation becomes .15 * x = -.15 * y


solve for x to get x = (-.15 * y) / .15


this makes x = -y


for example:


if -y = 100, then x = 100 because x = -y


go back to your original equation.


it states that 30% of 50% of x is equal to 60% of y minus 75% of y.


when -y = 100, solve for y to get y = -100


when y = -100, 60% of y minus 75% of y becomes 60% of -100 minus 75% of -100 which becomes .6 * -100 minus .75 * -100 which becomes -60 minus -75 which becomes -60 plus 75 which becomes 15.



your problem statement therefore becomes 30% of 50% of x is equal to 15 which becomes .3 * .5 * x = 15 which becomes .15 * x = 15.


solve for x to get x = 15 / .15 which becomes x = 100.


you have x = 100 and y = -100


when y = -100, -y = 100


this gets you x = --y