If Rs. 64 accounts to Rs. 83.20 in 2 years, what
will Rs. 86 amount to in 4 years at the same
rate per cent pr annum?
(a) Rs. 115.80 (b) Rs. 127.70
(c) Rs. 127.40 (d) Rs. 51.60
Answers
Answered by
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Your options are incorrect. In option C, there should be Rs.137.60
Description for Correct answer:
let the rate of interest = R%
According to question,
Intrest in 2 yrs = 83.20−64=19.2083.20−64=19.20
R(in per)=SI×100P×TSI×100P×T
R(in per)=19.20×10064×219.20×10064×2
R(in per)=302302=15%
Therefore, Amount of Rs.86 will be in four years by 15(in per) rate of interest
SI=86×15×410086×15×4100= Rs.51.6
Amount=Principal+S.IPrincipal+S.I
=86+51.686+51.6=Rs. 137.60
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Description for Correct answer:
let the rate of interest = R%
According to question,
Intrest in 2 yrs = 83.20−64=19.2083.20−64=19.20
R(in per)=SI×100P×TSI×100P×T
R(in per)=19.20×10064×219.20×10064×2
R(in per)=302302=15%
Therefore, Amount of Rs.86 will be in four years by 15(in per) rate of interest
SI=86×15×410086×15×4100= Rs.51.6
Amount=Principal+S.IPrincipal+S.I
=86+51.686+51.6=Rs. 137.60
HOPE THAT WILL HELP YOU
PLZZZ MARK AS BRAINLIEST PLZZZ
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