19. In three years, the price of new model of a S6-mobile phone will be six more than twice the rent price. If the projected price of the new S6 phone is Php 40 000, what algebraic equation to express its current price? 20. Romar is twice as old as Mavic. Jaypee is 8 years older than Romar. Write an algebraic equa- tion showing that twice the sum of Romar and Mavic ages will result to Jaypee's age.

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