Question

Q- if the first three terms of an
a.P. Are b,c and 2b , then find the ratio of b and c

Answer 1

Answer:

common difference=c-b,2b-c

c-b=2b-c

c+c=2b+b

2c=3b

b:c=2:3

Answer 2

Answer:

b,c,2b

c-b= x-----1

2b-c=x------2

from 1 and 2,we get

c-b=2b-c

2c=3b

b/c=2/3