please show detailed step by step working

*3.7 Steam with 80% quality is being used to heat a 40% total solids tomato pure as it flows through a steam injection heater at a rate of 400 kg/h. The steam is generated at 169.06 kPa and is flowing to the heater at a rate of 50 kg/h. Assume that the heat exchanger efficiency is 85%. If the specific heat of the product is 3.2 kJ/(kg K), determine the temperature of the product leaving the heater when the initial temperature is 50C. Determine the total solids content of the product after heating. Assume the specific heat of the pure is not influenced by the heating process