The ratio between A's and 13's ages two years ago was 3: 2 and at present it is 7: 5. Find B's present age ?

a. 8 yrs.
b. 10 yrs.
c. 12 yrs.
d. 14 yrs.

• A : B present = 7 : 5
  A : B 2 years ago = 3 : 2
  then B's present age = (5 *( 3 - 2 )*2) / 14 - 15 = 10 yrs
• 7 years agoHelpfull: Yes(1) No(2)
• (3x+2)/(2x+2)=7/5
  so x=4 now, put the value of 4 in 2nd to find the present age of B
  2x+2=2*4+2=10
  hence ans is 10 years.
• 6 years agoHelpfull: Yes(1) No(0)