the sum of ana and liza age is 45
six years ago ana was twive as old as liza then. how old is liza?
six years ago ana was twive as old as liza then. how old is liza?
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Ana's Age = A
Liza's Age = L
Ana's Age 6 years ago = A – 6
Liza's age 6 years ago = L – 6
Ana's Age + Liza's Age = 45
A + L = 45
A = 45 – L
6 years ago, Ana's Age is twice Liza's Age
A – 6 = 2(L – 6)
(45 – L)–6 = 2L –12
45 – 6 – L = 2L – 12
39 + 12 = 2L + L
51 = 3L
3L = 51
L = 51/3
L = 17
Liza is 17 years old.