A survey shows that 67% of the people liked product p1 whereas 73% like product p2. If x% of the people like both the products p1 and p2 .Find the value of x

LET 100% BE THE UNIVERSE OF THE GIVEN SET
A.T.Q
n(a)=67%
n(b)=73%
n(a intersection b)=x%

to find :- x

solution:-

100%=(67%+73%)-x%
100% = (140)%-x%
100%-140%= -x%
(100-140)%= -x%
=>  -40% = -x%
= 40% = x%
percent get cancel with other percent

therefore, x =40