Question

A wheel made 513 revolutions at 68 3/7 per minute. How minutes did it rotate?

Answer 1

time(t) = 7.60805

Explanation:

Givens

Rv = 513

Rate = 67 3/7

t = ??

Formula

Rv = R * t

Solution

513 = 67 3/7 * t

Change the 3/7 to a decimal

3÷7 = 0.428571 repeating

513 = 67.428571... * t Divide by 57.42857

513 / 67.438571 = t Carry out the division

7.6081 = t Switch

t = 76081 minutes