Question

if 5/7,8/a,b/28 & 32/c then find the a,b,c ​

Answer 1

now a+b from (a + b):(b + c):( c + a) = 6:7:8 is 6x, if common ratio is x. so D gives us a+b=7y+5y=12y... a multiple of 6 and E .