Poll: if a sum of rs 10,000 accumulates to rs 16000 after 3 years at simple interest , what is the rate of interest?
10%
5%
15%
20%
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question
#1
if a sum of rs 10,000 accumulates to rs 16000 after 3 years at simple interest , what is the rate of interest?
1. 10%
2. 5%
3. 15%
4. 20%
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#2
10000=16000*r*3

r=10000/16000*3
r=20%
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#3
20% is right answer
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