There are 250 blue beads and yellow beads altogether in a box. If there are 60 fewer yellow beads than blue beads in the box, find the percentage of beads in the box that are yellow.
Let's assume the number of yellow beads in the box is y.
The total number of beads in the box is 250 + y.
Since there are 60 fewer yellow beads than blue beads, then we can say that y = 250 - 60.
The number of yellow beads in the box is therefore y = 190.
So the total number of beads in the box is 250 + 190 = 440.
The percentage of beads in the box that are yellow is (190/440) x 100% = 43.18% = 43% (rounded to the nearest whole number). Answer: \boxed{43}.