K is a 3 digit number such that the the ratio of the number to the sum of its digits is least.What is the difference between the hundreds and tens digit?  Choose the correct choice from the following:
A) 9
B) 8
C) 7
D) 6
E) 5
Explanation :   This is only possible only when the hundreds digit has the least value and tens and units has the highest value.so we could get the highest possible sum but possible lowest number.so by this logic this number could only be 199.so the difference is 8.   note:remember a number given as abc i.e abc=aX100+bX10+c.   so 123=1X100+2X10+3.   Answer : 8
<result>B</result>
K is a 3 digit number such that the the ratio of the number to the sum of its digits is least.What is the difference between the hundreds and tens digit?