The simple ionterest on rs 72 for 11 months at the rate of 3.5 paise per rupee per month is
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p= ₹72
r= (3.5p/₹)/m or (₹0.35/₹)/m
or
r= (₹25.2/₹72)/m
t= 11m
S.I.= p×r×t = 72× 25.2/72 × 11
=72× 252/720 ×11
=72× 126/360 ×11
=72× 63/180 ×11
=72× 21/60 ×11
=72× 7/20 ×11
or substitute 7/20 with
7/20= 35/100= 0.35 (they're equivalent).
=72× 0.35 ×11
= 792 × 0.35
= ₹ 277.20/m
r= (3.5p/₹)/m or (₹0.35/₹)/m
or
r= (₹25.2/₹72)/m
t= 11m
S.I.= p×r×t = 72× 25.2/72 × 11
=72× 252/720 ×11
=72× 126/360 ×11
=72× 63/180 ×11
=72× 21/60 ×11
=72× 7/20 ×11
or substitute 7/20 with
7/20= 35/100= 0.35 (they're equivalent).
=72× 0.35 ×11
= 792 × 0.35
= ₹ 277.20/m
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