To find the value of y, we start by translating the problem into a mathematical equation. We know that twenty percent of y can be expressed as 0.20y, and five percent of 680 can be calculated as 0.05 × 680.
First, we calculate five percent of 680:
0.05 × 680 = 34
Now we have the equation:
0.20y = 34
To solve for y, we divide both sides of the equation by 0.20:
y = 34 / 0.20
Calculating that gives:
y = 170
Therefore, the value of y is 170.