Question

What will be the ratio of simple interest earned by a certain amount at the same rate of interest for 6 yr and that for 9 yr?

Options

• 1 : 3

• 1 : 4

• 2 : 3

• Data inadequate

Answer 1

2 : 3
Explanation : 

Let the principal be P and the rate of interest be r %.

∴ Required ratio = `(((Pxxrxx6)/100))/(((Pxxrxx9)/100))=6/9=2 : 3`