Question

CPC-2016
54.
A Businessman invests Rs. 5,000 each
time at the end of 1960, 1965 and 1970.
His total amount doubles every five
years. If he starts his business with Rs.
5,000 in 1960, what will be the amount
in 1980 ?
(a) Rs. 70,000/-
(b) Rs. 1,40,000/-
(c) Rs. 2,40,000/-
(d) Rs. 2,80,000/-​

Answer 1

rs.1,40,000

as in 1960,1965,1970,1975,1980=5 years

next 5000*20+5000*8