Question

Q.7 The sum of the ages of three friends is 122 years.
If the ratio of the age of oldest to the middle one is
5:4 and that of the middle to the youngest is 5:4, how
much elder is the oldest one than the youngest
member?
(a)12 years (b)18 years (c)16 years (d)20 years
le) 24 years​

Answer 1

Step-by-step explanation:

oldest/middle=5/4=25/20

middle/youngest=5/4=20/16

their ages are in ratio 25:20:16

25x+20x+16x=122

61x=122

x=2

oldest=50

youngest=32

difference=18

option b)