(Solved): If \( 3 \mathrm{~mL} \) of serum is diluted with \( 17 \mathrm{~mL} \) of water, what is the serum ...

If \( 3 \mathrm{~mL} \) of serum is diluted with \( 17 \mathrm{~mL} \) of water, what is the serum dilution? \( 1: 2 \) \( 1: 10 \) \( 1: 6: 7 \) \( 1: 100 \) If \( 0.5 \mathrm{~mL} \) serum is obtained and diluted to \( 1.5 \mathrm{~mL} \), the amount of diligent added is? \( 5 \mathrm{~mL} \) \( 1.0 \mathrm{~mL} \) \( 10 \mathrm{~mL} \) \( 20 \mathrm{~mL} \)