If the original mass of an element, in grams, is a whole number and the element has decayed by exactly 93 percent in some time period, which of the following could be the final mass of that element? Choose the correct choice from the following answers.
A) 27 grams  B) 30 grams  C) 29 grams  D) 31 grams  E) 35 grams
Let original mass be 100   The final mass of that element will be 7   So whatever option we have it will be divisible by 7   Check for the options the one that doesn't produce non terminating decimal is our answer   A. 27 grams   27/7 = 3.857...   B. 30 grams   28/7 = 4.285...   C. 29 grams   29/7 = 4.142.......   D. 31 grams   31/7 = 4.428.....   E. 35 grams   35/7= 
<gadget id="calculator">35/7</gadget>
<output>5</output>
5   Hence our answer will be (35 grams)
<result>E</result>
If the original mass of an element, in grams, is a whole number and the element has decayed by exactly 93 percent in some time period, which of the following could be the final mass of that element?