R-SAT Exam Numerical Ability

Arun lent an amount to David, which is 5/8th of the amoutn lent to Javed The rate to be paid by David is 11/9 times of the rate to be paid by Javed. Javed cleared his loan in 4.5 years and David cleared his loan in 6 years. Arun got a total interest of Rs.10464 form both Find the difference between the rates(if the total sum lent in both the cases was Rs. 10,400)?
Option
a) 2%
b) 6%
c) 4%
d) 8%
e) none

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R-SAT Other Question

A rectangle plot was fenced without idea of its actual measurements . When measurements were known then it was found to have lost 20% of its length and 10% of its breadth. The Percentage of decrease in area is ?
Option
a) 28%
b) 18%
c) 13%
d) 26%
e) None
while measuring area of a square plot an error 3% in excess is made while measuring the side of a square . The percentage of error in the calculated area of the square is
Option
a) 3.06%
b) 6.09%
c) 6%
d) 3%
e) none