Find the total earning over 6 years for a person whose salary is rs. 30000 p.a and increases by 15000 p.a, every six month.
a. 229501
b. 229205
c. 229500
d. 229505
e. 292500

• None of these..
  As per given data
  Inital monthly income = Rs 2500 pm
  Increase in monthly income after every 6 months = 15000/12= Rs 1250.
  Total earnings in 6 years = (6*12/2)[2*2500 +11*1250)=Rs. 675000
• 11 years agoHelpfull: Yes(3) No(6)
• 30000+15000*12,because the increase double in one year then we double the amount earned
  
• 10 years agoHelpfull: Yes(1) No(2)
• Friends, this is related to arithmetic progression.
  For each six months he earns half of his salary.
  a= 15000 (Initial term)
  d= 750(Common difference)
  Sum of 6 years(12 terms)= a/2[2a+(n-1)d]
  =229500
• 10 years agoHelpfull: Yes(1) No(0)
• salary is 30000 and increases 15000 p.a than
  30000+7500+45000+45000+45000+45000+45000=262500
• 11 years agoHelpfull: Yes(0) No(3)