The ages of A and B differ by 2 years. A's mother D is twice as old as A and B is twice as old as his sister C. The age of D and C differ by 40 years. Find the ages of A and B.
{Ans: 26yrs and 24 yrs}…
Please help. Thanks in Advance.
The ages of A and B differ by 2 years....
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algebra-precalculus
1 Answers
1
$$A-B=2 \tag 1$$ $$D=2A\tag 2$$ $$B=2C \implies C=B/2 \tag 3$$ $$D-C=40\tag 4$$
$(2)$ and $(3)$ in $(4)$ yield
$$2A-B/2=40 \tag 5$$
Can you finish using $(1)$ and $(5)$?