Question

8. (a) If the simple interest on a certain sum due some
years hence at 6% is 180 and the discount at 5%
on the same sum is 140. Find the sum and the
time

can anyone can help me???​

Answer 1

Bankers discount or simple interest at 5% =180×5/6=150 rs

Discount at 5%=140 rs

Sum =BD×TD/BD-TD

=150×140/150-140=21000/10

=2100rs

% rate=180×100/2100×6= 10/7 %

TD=True Discount

BD =Bankers Discount