Question
If a - b : b - c : c - d = 1 : 2 : 3, then what is the value of (a + d) : c?
यदि a - b: b - c: c - d = 1: 2: 3, तो (a + d) : c का मान क्या है?
A.
B.
C.
D.
Answer
B. a - b : b - c : c - d = 1 : 2 : 3 So - a - b =x a=x+b b - c =2x b=2x+c c - d =3x d=c-3x a=x+b (b=2x+c) a=x+2x+c=3x+c a+d=3x+c+ c - 3x ( d = c - 3x) a+d=2c a+d:c=2c:c=2:1 So the correct answer is option B.
B. a - b: b - c: c - d = 1: 2: 3 इसलिए - a - b = x a = x + b b - c = 2x b = 2x + c c - d = 3x d = c - 3x a = x + b (b = 2x + c) a = x + 2x + c = 3x + c a + d = 3x + c + c- 3x ( d = c - 3x) a + d = 2c a+ d: c = 2c: c = 2: 1 इसलिए सही उत्तर विकल्प B है।