A stick of 30 cm is broken into two pieces, what is the length of the shorter piece if the longer piece is 6 cm longer than the other? Choose the correct answer
A) 11
B) 10
C) 12
D) 13
E) 7
Since, 30 is the total length. Smaller is any one from answers.   Try Back solving from answer D, i.e. 12. 12+(12+6) = 31 &gt; 30   Hence, Select next smaller no. : 12 +(12+6)= 
<gadget id="calculator">12 +(12+6)</gadget>
<output>30</output>
30.   So, 12 is the answer   Answer is 12
<result>C</result>
A stick of 30 cm is broken into two pieces, what is the length of the shorter piece if the longer piece is 6 cm longer than the other?