সব প্রশ্নে ফিরে যান
Math
In 10 years, A will be twice as old as B was 10 years ago. If A is now 9 years older than B, then the present age of B is
A) 19 years
B) 29 years
C) 39 years
সঠিক উত্তর
D) 49 years