Sumali sa komunidad ng IDNStudy.com at simulang makuha ang mga sagot. Makakuha ng impormasyon mula sa aming mga eksperto, na nagbibigay ng detalyadong sagot sa lahat ng iyong mga tanong.

the sum of ana and liza age is 45
six years ago ana was twive as old as liza then. how old is liza? ​


Sagot :

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.