It takes Mr. Maple 20 minutes to cut a long stick of bamboo to 5 short pieces. How long does it take Mr. Maple to cut another bamboo stick to 9 pieces? *

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%