A blood report gives these counts in each microlitre: red cells 4.8 million, white cells 7200 and…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A blood report gives these counts in each microlitre: red cells million, white cells and platelets . A technician takes a sample of of this blood. One millilitre is microlitres.
- How many red cells are in the sample, in millions?
- How many white cells are in the sample, in millions?
- How many platelets are in the sample, in millions?
- About how many red cells are there for each white cell?
Need a reminder? The key ideaShow
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Given. Per microlitre: red cells million, white cells , platelets . Sample: .
Plan. Multiply each count by .
Step 1. Red cells. million.
Step 2. White cells. million.
Step 3. Platelets. million.
Step 4. The ratio. , so about red cells for each white cell.
Answer: million; million; million; about .
Check. Red cells outnumber white cells by hundreds to one, which agrees with the table in the lesson.
Discussion (0)
Log in to join the discussion.
Loading…