Question

Mr. Roopchand finds that an increase in the rate of interest from 4 and7 /8 %to 5 and1 /8 % per annum increases his yearly income by rs.25. His investment is

Answer 1

initial 4000rs maybe

Answer 2

Answer:

10000

Step-by-step explanation:

R1=39\8

R2=41\8

SI1=PRT\100=P39\8T\100

SI2=P41\8T\100

(T is here constant)

amount1=P+si=p+39p\800

                      =839p\800

amount2=p+si=841p\800

according to question-

841p\800-839p\800=25

so p=10000