Rocky is 22 and his brother Ronnie is 25 years old. How many years ago was the ratio of their ages 2:5 ?
a.20 years
b.2 years
c.10 years
d.22 years

• let be x years ago....
  so, (22-x)/(25-x)=2/5........solve it.
  x=20years...ans
  
• 12 years agoHelpfull: Yes(5) No(0)
• 22:25 are the ratios of their ages at present.
  so to get 2:5 ratio in the past we have to reduce their ages
  25 is the multiple of 5
  so, check by decresing both by 5 and then check the ratios
  1)dec 5 on two sides
  17:20 not possible (5 years decresed)
  2)dec another 5 on two sides
  12:15 not possible (10 yr dec)
  3) dec another 5
  7:10 not the required one (15 yr dec)
  4) dec another 5
  2:5 right (20 yr dec)
• 12 years agoHelpfull: Yes(3) No(2)
• 20 years is the ans
  22-x/25-x=2/5
  110-50=-2x+5x
  x=20
• 11 years agoHelpfull: Yes(1) No(0)
• (22-x)/(25-x)=2/5,
  then solving we get
  x=20
• 8 years agoHelpfull: Yes(0) No(0)