Nails and screws are manufactured at a uniform weight per nail and a uniform weight per screw. If the total weight of one screw and one nail is half that of 6 screws and one nail, then the total weight of 3 screws, and 3 nails is how many times that of 4.5 screws and 1.5 nails?
Choose the correct choice from the following
A) a. 4/3
B) b. 5/2
C) c. 2
D) d. 3/2
E) e. 5/4
let the weight of nail be n and that of screw be s..   so s+w=1/2 * (6s+1n)...   or 1n = 4s..   lets see the weight of 3 s and 3n= 3s+3*4s=15s..   and weight of 4.5s and 1.5n3 +3*4= 
<gadget id="calculator">3 +3*4</gadget>
<output>15</output>
15s..   and weight of 4.5s and 1.5n= 4.5s+1.5*4.5s=11.25s..   ratio4.5 +1.5*4.5= 
<gadget id="calculator">4.5 +1.5*4.5</gadget>
<output>11.25</output>
11.25s..   ratio= 15s/11.25s=15/11.25=4/3   a. 4/3
<result>A</result>
Nails and screws are manufactured at a uniform weight per nail and a uniform weight per screw. If the total weight of one screw and one nail is half that of 6 screws and one nail, then the total weight of 3 screws, and 3 nails is how many times that of 4.5 screws and 1.5 nails?