In a community. 1200 families were surveyed to know the sources of energy for cooking purpose and obtained the following information: 650 families used wood, 360 used kerosene. 270 used gas. 39 used gas and kerosene only, 12 used kerosene and wood only and 3 used gas and wood only. Answer the following questions by using a Venn-diagram i How many families used all three types of fuel? ii. How many families used wood and kerosene? ii. How many families used gas only?iii. how many family used wood and kerosene?​