bumeh511
21.08.2020 •
Mathematics
The sum of the present ages of lily and Chris is 36. In 4 years time, the sum of their ages will equal twice Lily’s present age? How old are they now?
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Ответ:
If the present age is x, then age n years later/hence = x + n. If the present age is x, then age n years ago = x – n. The ages in a ratio a: b will be ax and bx. If the current age is y, then 1/n of the age is y/n.
Ответ:
A...?
Step-by-step explanation: