Question

There are 200 houses in a village in patri near jammu . people in the village use firewood, kerosene for cooking food.a survey has revealed 120 use firewood and50use kerosene to cook food . 30 use both firewood and kerosene , number of houses that use kerosene,but not firewood

Answer 1

Answer:

Number of houses that use only kerosene are:

50-30=20

therefore the number of houses that use only kerosene are 20 houses.