Asked by Shari

In a group of 100 blood donors, typically 9/25 have type A+ blood and 3/50 have type A- blood. What fraction has type A blood all together?
Answered by Ms. Sue
9/25 = 18/50

18/50 + 3/50 = ?

Answered by Shari
21/50?
This is what I was wondering was if I was supposed to add the 2 together! Thank you!
Answered by Ms. Sue
Yes, 21/50

You're welcome.
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