Question

plz answer this question

Answer 1

let the sum be x
& rate of interest for c.i be y
then
x*16*2/100=4000
or x=400000/32
or x=12500
c.i =12500((1+y/100)³-1)
then
125/10000((100+y)³-1000000)=6620
or (100+y)³=(66200000/125)+1000000
or (100+y)³=529600+1000000
or (100+y)³=1529600
or 100+y=115.22
or y=115.22-100
or y =15.22......................(ans)

Answer 2

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