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Популярное Word Problems >

Ray is 19 years older than his sister Danielle. In 10 years, he will be twice as old as Danielle. How old is each of them now?

Решение

R a y i s 19 ye a rs o l d er t han hi s s i s t er D ani e ll e . I n 10 ye a rs, h e w i ll b e tw i ce a s o l d a s D ani e ll e . Ho w o l d i s e a c h o f t h e m n o w ?

Решение

Ray^{'} s age is : 28

Danielle^{'} s age is : 9

Шаги решения

Translate the problem into an equation:

x + 10 = 2 (x - 19 + 10)

Решите для

x, x + 10 = 2 (x - 19 + 10) : x = 28

Найдите age

Ray^{'} s age is : 28

Danielle^{'} s age is : 9

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