Hi the answer is 117 because 117 times 3 equals 351 , in this type of problems you just have to find a number that when is duplicate is going to give you the answer , so if you add 117 and 117 , 117 , you will find out that your answer is 351.
Answer:
If we assume a temperature of 20ºc and the blood interfacial surface tension is similar to water interfacial surface tension, the diameter of the capillary tube should be 0.933mm.
Step-by-step explanation:
The Jurin law describes the height a fluid can reach in a capillary tube. This law can be written as:

where γ is the interfacial surface tension, θ is the contact angle with the fluid, ρ is the fluid density, g is the gravity acceleration and r is the tube radius.
If we assume that the interfacial surface tension of blood and water are almost the same, γ=0,0728 N/m at 20ºc. Therefore the diameter of the tube will be:

The number is made 1,000 times greater and so the units must be made 1,000 times smaller. The answer is "A" milligrams.
=(120/48)
=5/2
=(4/2)+(1/2)
=2+(1/2) or 2.5