How many drops of antibiotic should the marine biologist apply?

Question

The average blue whale has a length of 2500 centimeters. The distance from Jupiter to Saturn is 6.46 x 108 km. How many blue whales lined up tip to tail would it take to reach Saturn from Jupiter.  x 10^  blue whales?
A marine biologist weights a blue whale at 299200 pounds. What is the weight of the blue whale in grams?  x 10^  grams? The blue whale has a scratch on one of its fins and the marine biologist must apply 1.45 mL of a liquid antibiotic.
How many drops of antibiotic should the marine biologist apply? drops?

Answer 1

6.46x108km x 1 whale/2.5x10-3km = 2.6x105 whales.

299200 pounds x 454g/pound = 135,836,800 grams = 1.36x108 grams

1.45 ml x 1 gtt/0.0649 ml = 22.3 drops

Gtt is the abbreviation for drops. The conversion factor is based on pharmaceutical applications of drops and mls.

Answer 2

OK, I believe you can do these.  But, here's one more conversion factor you might not know: there are 20 drops in 1 mL.

 

follow the units to solve a dimensional analysis problem.  Looks like this: A x B/A x C/B = C  A is the units where  you begin and C is the units of the answer you want.  Have fun.