a survey was conducted among 500 families regarding the type of fuel they use in their cooking. it is known that 200 people use kerosene , 270 people use LPG , and 240 people use electricity..... 72 people use both Kerosene and LPG..... 126 people use both LPG and electricity...... 62 people use both Kerosene and electricity..... it is also known that 20 people use none of the above fuels....... the question is find out how many people use all three types of fuels

Question

a survey was conducted among 500 families regarding the type of fuel they use in their cooking.   it is known that 200 people use kerosene ,  270 people use LPG ,  and 240 people use electricity..... 72 people use both Kerosene and LPG..... 126 people use both LPG and electricity...... 62 people use both Kerosene and electricity..... it is also known that 20 people use none of the above fuels....... the question is find out how many people use all three types of fuels

anonymous · Answer

use venn diagram

anonymous · Answer

ya i know that im not able to get it ... i want the technique how to do it

anonymous · Answer

where did you get this problem from?

anonymous · Answer

ok i finally found an on line venn diagram template.

anonymous · Answer

does no one use all three?

anonymous · Answer

no thats not the answer