1.

If a sum of money becomes Rs. 4000 in 2 years and Rs. 5500 in 4 years 6 months at the same rate of simple interest per annum, then the rate of simple interest is

A. <table><tr><td rowspan="2">21</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>3</center></td><td rowspan="2">%</td></tr><tr><td style="text-align: center;">7</td></tr></table>
B. <table><tr><td rowspan="2">21</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2">%</td></tr><tr><td style="text-align: center;">7</td></tr></table>
C. <table><tr><td rowspan="2">21</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>1</center></td><td rowspan="2">%</td></tr><tr><td style="text-align: center;">7</td></tr></table>
D. <table><tr><td rowspan="2">21</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>5</center></td><td rowspan="2">%</td></tr><tr><td style="text-align: center;">7</td></tr></table>
Answer» B. <table><tr><td rowspan="2">21</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>2</center></td><td rowspan="2">%</td></tr><tr><td style="text-align: center;">7</td></tr></table>


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