By working explain it to me please.
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Answer:
to find rate=si×100/principal ×rate =40×100/200×4=5%
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Step-by-step explanation:
SI = ( P x T x R ) ÷ 100
R = ( SI x 100 ) ÷ P x T
a) Rate R = 40 x 100 ÷ 200 x 4
R = 5
b) Rate R = 1500 x 100 ÷ 2500 x 4
R = 15
c) Rate R = 1275 x 100 ÷ 8500 x 3
R= 5
d) Rate R = 1638 x 100 ÷ 4550 x 3
R = 12
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