What is the least common denominator for the fractions 1.6 and 3.4 ?
a.
8

B.
12

C.
18

D.
24

Question

What is the least common denominator for the fractions 1.6   and 3.4 ?
a.
8   
   

 
 

  

  B. 
  12   
   

 
 

  

  C. 
  18   
   

 
 

  

  D. 
 24

anonymous · Answer

I think its 24

anonymous · Answer

@LegendarySadist

anonymous · Answer

The fractions $$\large \sf \frac{1}{6}~and~\frac{3}{4}$$?

anonymous · Answer

yes

anonymous · Answer

Well you are somewhat right. 24 is a common denominator, but it isn't the lowest one.

anonymous · Answer

12? im sorry if it takes me forever to get the answer, math isint my best subject..

mathmale · Answer

I see you've multiplied 6 and 4 to get a common denominator.  This always works, BUT the result is not necessarily the LEAST common denominator. 

Another way to arrive at the LCD would be to FACTOR each denominator.
4 factors into 2*2 and 6 factors into 3*2.  

Question:  Which factor is common to both denominators?
The LCD is found by taking that factor and multiplying it by each of the remaining factors (which here are 2 and 3).  LCD=2*2*3=12.

anonymous · Answer

so was I correct????????? with 12

mathmale · Answer

Yes, but the question is HOW will you do this next time?  Just by multiplying the denomiators or by trying up front to find the LEAST common den.?

anonymous · Answer

by trying up front to find the least common den. and thanks!