In the formula d=r×t, if d equals 60, which of the following is equivalent to r?

To isolate r in the equation d = r × t, we need to manipulate the formula. The given formula expresses the relationship between distance (d), rate (r), and time (t). Since we know that d equals 60, we can substitute that value into the equation, resulting in 60 = r × t.

To find r, we need to solve for it by dividing both sides of the equation by t. This gives us r = 60/t.

This means that the value of the rate r is equivalent to 60 divided by the time t. Thus, in the context of the choices given, option B, which states (60/t), accurately represents the calculation we performed to isolate r from the original equation.

Other choices do not correctly represent the isolation of r. For example, multiplying t in option A or dividing t by 60 in option C do not maintain the relationship defined by the original equation. Therefore, option B is the only choice that correctly captures the equivalent expression for r when d equals 60 in the formula d = r × t.