kami23arap5p78v
04.07.2021 •
Mathematics
Mary is 3 years older than Sarah. Winifred is twice as old as Mary. Altogether their ages total 89. How old is Sarah?
24 years old
22 years old
18 years old
None of these choices are correct.
Solved
Show answers
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Ответ:
Step-by-step explanation:
M = S+3
W = 2M = 2(S+3) = 2S+6
M+S+W = 89
(S+3)+S+(2S+6) = 89
S = 20
Ответ:
Dividing this by 6 we get 33/8 / 6 = 33/48 = 11/16 hours / day answer