Permutations and Combinations

Permutations and Combinations

Question

A man deposited Rs. 10,000 in a bank at the rate of 5% simple interest annually. Find the amount in 15th year since he deposited the amount and also calculate the total amount after 20 years.

Answer

Money deposited = Rs 10,000, Rate of interest = 5%
Interest for one year = 10000 cross times 5 over 100 space equals space Rs. space 500
Let a be the amount deposited and d be the interest every year.
∴                           a = 10000,  d = 500
Amount in the 15th year = straight t subscript 15 space equals space straight a plus left parenthesis 15 minus 1 right parenthesis straight d space equals space 10000 space plus space 14 left parenthesis 500 right parenthesis space equals space Rs. space 17000
Let  <pre>uncaught exception: <b>mkdir(): Permission denied (errno: 2) in /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php at line #56mkdir(): Permission denied</b><br /><br />in file: /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php line 56<br />#0 [internal function]: _hx_error_handler(2, 'mkdir(): Permis...', '/home/config_ad...', 56, Array)
#1 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/util/sys/Store.class.php(56): mkdir('/home/config_ad...', 493)
#2 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/FolderTreeStorageAndCache.class.php(110): com_wiris_util_sys_Store->mkdirs()
#3 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/RenderImpl.class.php(231): com_wiris_plugin_impl_FolderTreeStorageAndCache->codeDigest('mml=<math xmlns...')
#4 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/lib/com/wiris/plugin/impl/TextServiceImpl.class.php(59): com_wiris_plugin_impl_RenderImpl->computeDigest(NULL, Array)
#5 /home/config_admin/public/felixventures.in/public/application/css/plugins/tiny_mce_wiris/integration/service.php(19): com_wiris_plugin_impl_TextServiceImpl->service('mathml2accessib...', Array)
#6 {main}</pre> denote the total amount after 20 years
                       straight S subscript 20 space equals space Rs. space 20 over 2 left square bracket 2 left parenthesis 10000 right parenthesis space plus space left parenthesis 20 minus 1 right parenthesis 500 right square bracket space equals space Rs. space 10 space left square bracket 20000 space plus space 9500 right square bracket
                              = 10 [29500] =  Rs. 29500

More Chapters from Permutations and Combinations