What is the ratio 8 to 60 written as a fraction in the lowest terms
a. 4/15 b. 3/20 c. 8/80 d. 2/15

To find the inverse of a number a, one can use the equation f(c) = a-1/c=0 where c is the inverse of a use the secant method of finding roots of equations to find the inverse of a = 2.5 ,er = 0.001%