Thus, any values of 'I and 1"2 between 0 and 1 that satisfy 1"1 + 6r2 > 4 should make toy trains
profitable. However, this goal may not be achievable because it requires practically impossible
reductions in the times of operations 1 and 2. For example, even reductions as high as 50% in
these times (that is, rl = r2 = .5) fail to satisfy the given condition. Thus, TOYCO should not
produce toy trains unless an increase in its unit price is possible.