A certain sum of money at simple interest amount to rs.4320 in 2×1÷2 year and to rs.4752 in 4 year. the rate of interest per annum is
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let the sum be x
SI=p*r*t/100
=x*r*1/100 (since,2×1÷2=1)
=rx/100
a=p+si
=x+rx/100 .....(i)
SI=p*r*t/100
=x*r*4/100
=rx/25
amount=p+si
=x+rx/25=4752
=x(1+r)=4752×25
SI=p*r*t/100
=x*r*1/100 (since,2×1÷2=1)
=rx/100
a=p+si
=x+rx/100 .....(i)
SI=p*r*t/100
=x*r*4/100
=rx/25
amount=p+si
=x+rx/25=4752
=x(1+r)=4752×25
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