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Popolare Word Problems >

13 years from now David will be twice as old as Pearl. The current sum of the ages of David and Pearl is 19. How old is Pearl right now?

Soluzione

13 ye a rs f ro m n o w D a v i d w i ll b e tw i ce a s o l d a s P e a r l . T h e c u rre n t s u m o f t h e a g es o f D a v i d an d P e a r l i s 19. Ho w o l d i s P e a r l r i g h t n o w ?

Soluzione

Pearl^{'} s age is : 2

Fasi della soluzione

Translate the problem into an equation:

x + 13 = 2 (19 - x + 13)

Risolvi per

x, x + 13 = 2 (19 - x + 13) : x = 17

Trova Pearl's age

: 2

Pearl^{'} s age is : 2

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