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Fuzzy set has been applied in many real applications to handle uncertainty. The aim of the paper is to study the replacement problem with uncertainty. This problem involves capital cost, scrap value or salvage value, maintenance cost or operating cost, and rate of interest having an imprecise value. Here, we assume the imprecise values as positive trapezoidal fuzzy numbers. Moreover, we consider that the value of money changes with fuzzy rate of interest due to market fluctuations. To deal withdoi:10.5120/3676-5151 fatcat:msm5v6drw5brlbkakw4wvua3ba