Question

(A) 20
(C) 50
(B) 25
(D) 75​

Answer 1

Answer:

If A + B = 50, B + C = 30, and C + A = 40, what is A - B - C?

Let me answer this question…

Step-1:- A+B=50 , B+c=30 And C+A=40

Step-2:- (A+B)+(B+C)+(C+A)=50+30+40

=>2(A+B+C)=120

=>A+B+C=120/2

=>A+B+C=60

Step-3:- if A+B+C=60 and A+B=50(Given), Then

=>50+c=60

=>C=60–50=10

Step-4:- if A+B+C=60 and B+C=30(Given), Then

=>A+30=60

=>A=60–30=30

Step-5:- if A+B+C=60 and C+A=40(Given), Then

=>B+40=60

=>B=60–40=20

Step-5:- A-B-C

=30–20–10

=0(Ans)