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Answer:
a) 380
b)2582
hope this helps you
Simple Interest x 100 = Product of Principal, Rate and Time
Step-by-step explanation:
CASE 1
Principal (P) = P
Rate, R = 5% pa
Time, T = 3 Years
Simple Interest = (P x R x T)/ 100
57 = (P x 5 x 3)/100
P = 5700/15
P = Rs. 380/-
CASE II
Principal (P) = P
Rate, R = 5% pa
Time, T = 3 Years
Simple Interest = (P x R x T)/ 100
904 = (P x 7 x 5)/100
P = 90400/35
P = Rs. 2582.85 /-
CASE -III
Principal = P
Rate = 4%
Time = 73 Days or 73/365
60 = {P x 4 x 73/365}/100
P = (60 x 365 x 100)/ 73 x 4
P = Rs. 7500 /-