Total power of a bulb and a heater = 100 + 1500 = 1600 watt
= \(\frac{1600}{1000}\)
= 1.6 kw
electricity consumption per week = 4.8 * 7 = 33.6 unit
Now power consumption per week = 4.8 * 7 = 33.6 unit
So, The final reading of meter box after one week = 33.6 + 210 = 243.6 unit