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How do i solve using a system of two equations in two variables?
Adam is 5 years younger than Eve. In one year, Eve will be 3 times as old as Adam was 4 years ago. Find their ages now?
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Adam is 5 years younger than Eve.
That says:
A is 5 less than E or
A = E take away 5
A = E - 5
>>...In one year, Eve will be 3 times as old as Adam was 4 years ago...<<
That says:
If we add 1 to E we'll get 3 times A take away 4
or
E plus 1 equals 3 times A-4
E+1 = 3(A - 4)
So we have the system of equations:
E+1 = 3(A - 4)
A = E - 5
Can you solve that system by substitution? If not
post again asking how.
Answer: E = 14, A = 9
