A health worker explains emergency contraception to a class…
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
A health worker explains emergency contraception to a class. She says that a progestogen, a progestogen with estrogen, or an IUD can be used within hours of unprotected coitus. As an example, she says that coitus took place at pm on a Monday. At pm on the Tuesday of the same week, a student asks how long is left.
- How many hours have passed by pm on Tuesday?
- How many hours are left in the window?
- On which day and at which time does the window end?
Need a reminder? The key ideaShow
The pills are taken for days, and then there is a gap of days with menstruation. Saheli is taken once a week. Emergency contraceptives are used within hours of coitus. Vasectomy cuts the vas deferens, and tubectomy cuts the fallopian tubes. Reversal of both is poor.
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. Coitus at pm Monday. Window: hours. Time now: pm Tuesday.
Plan. Count the hours that have passed, take them from , and then add hours to the first time.
Step 1. Hours passed. hours.
Step 2. Hours left. hours.
Step 3. The end. hours is days. days after pm Monday is pm Thursday.
Answer: hours; hours; pm on Thursday.
Check. From pm Tuesday, hours is days ( hours) and hours more. That is pm on Thursday.
Watch out. Emergency methods are for an emergency, and they are not a regular method. A person who needs one should see a doctor or a health worker as soon as possible.
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