A circular rim A having a diameter of 45 inches is rotating at the rate of x inches/min. Another circular rim B with a diameter of 30 inches is rotating at the rate of y inches/min. What is the value of y in terms of x, if both the rims reach their starting positions at the same time after every rotation. Choose the correct choice from the following answers
A) 3x/2
B) 4x/5
C) 7x/5
D) 5x/7
E) 3x/4
t = S1/V1 = S2/V2   or, 45/x = 30/y   or, y = 45x/30 = 3x/2 (3x/2nswer 3x/2)
<result>A</result>
A circular rim A having a diameter of 45 inches is rotating at the rate of x inches/min. Another circular rim B with a diameter of 30 inches is rotating at the rate of y inches/min. What is the value of y in terms of x, if both the rims reach their starting positions at the same time after every rotation.