Question

Simple interest
PXRXN
100
Simple interest after 1 year
1000x10x1
100=
Simple interest after 2 years
1000 x 10 x 2
100=
Simple interest after 3 years
Simple interest after 3 year=_×_/100=360


.

According to this the simple interest for 4,5,6 years will be 400.
respectively.
From this d= and a=
Amount of simple interest after 20 years
tn= at(n-1)d
t20=+(20-1)×=
Amount of simple interest after 20 year is=​

Answer 1

Step-by-step explanation:

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