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OpenStudy (anonymous):
he difference between Sheila and Robbie's ages is 12. The sum of their ages is 42. If Sheila is the younger of the two, how old is Robbie?
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OpenStudy (anonymous):
the
OpenStudy (anonymous):
Total: 42 Difference: 12 42/2 = 21 21 - 12 = 9 That means Sheila is 9, since she is the youngest of the two. Robbie is 21.
OpenStudy (anonymous):
there is no 21 theres only 15,27.29,32
OpenStudy (anonymous):
Lol oh! Well, what do you think the answer is?
OpenStudy (anonymous):
a-b=12 a+b=42 add 2a=54 a=27 so b=15
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OpenStudy (anonymous):
15 rounds to 21
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