14. Find the rate of interest per annum
(a) if 5000 gives an interest of 1500 in 3 years.
(b) if1050 gives an interest of 168 in 2 years.
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Answer:
(a) P= 5000, SI= 1500, T= 3
R= SI*100/P*T
=1500*100/5000*3
= 10% p. a.
(b) P=1050,SI=168, T= 2
R= SI*100/P*T
=168*100/1050*2
= 8% p. a.
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