If 50% of x equal the sum of y and 20, then what is the value of `x - 2y`?

If x+y=52 and x-y=20 , then what is the value of x:y ?

If the ratio of y to x is equal to 3 and the sum of y and x is 80, what is the value of y?

If the sum of x and 20 is 8 more than the distance of 10 and y, what is the value of x + y ?

The sum of three numbers is 855. One of the numbers, x, is 50% more than the sum of the other two numbers. What is the value of x ?

If 40% of x is equal to 50% of y, then find the ratio of x and y.

If 10% of x is equal to 20% of y, then find x:y.

When x is subtracted from 2y, the difference is equal to the average of x and y. What is the value of (x)/(y) ?