Question

5. Find the rate of interest when :
(1) 1200 amounts to 1320 in 2 years
(ii
) 7300 amounts to 400 in 2 years.​

Answer 1

Step-by-step explanation:

S.I .= PRT /100

1320 = 1200 *2*R /100

132000= 2400*R

132000/2400=R

1320/24 =R

R= 55%

Answer 2

Answer:

5%

Step-by-step explanation:

Principal(P)=Rs.1200

Amount(A)=Rs.1320

S.I.=A−P

     = 1320−1200=Rs.120

Time(T)=2 years

Rate%=  (S.I.×100)/(P×T)

          = (120×100)/

(1200×2)

          =5%

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