the simple interest obtained on investing 600 at the end of 2 years in bank A would be 90 more that that obtained one investing it at the end of the same time in bank B. The annual rate of interest of A is more that that of B by how many percentage points.

• If a is rate of interest in bank A
  and
  b is rate of interest in bank B, then
  600*2*a/100 - 600*b*2/100=90
  12(a-b)=90
  a-b=90/12= 15/2 =7.5%
• 12 years agoHelpfull: Yes(1) No(0)
• si of A=si of B+90
  600*2*r1/100=(600*2*r2/100)+90
  r1-r2=7.5
  so ans is rate of A is 7.5% more then rate of B(r2)
• 11 years agoHelpfull: Yes(0) No(0)