Question: Calculate the logarithmic mean temperature difference for a co current heat exchanger if cold water comes in the tubes at 10C and leaves the heat

Calculate the logarithmic mean temperature difference for a co current heat exchanger if cold water comes in the tubes at 10C and leaves the heat exchanger at 23C. Hot water comes in the shell and 60C and leaves at 40C

answer is 30.59 please show all steps

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