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Популярное Word Problems >

Robert’s father is 4 times as old as Robert. After 5 years, father will be three times as old as Robert. Find their present ages.

Решение

R o b er t ’ s f a t h er i s 4 t im es a s o l d a s R o b er t . A f t er 5 ye a rs, f a t h er w i ll b e t h ree t im es a s o l d a s R o b er t . F in d t h e i r p rese n t a g es .

Решение

Robert^{'} s age is : 10

Father^{'} s age is : 40

Шаги решения

Translate the problem into an equation:

4 x + 5 = 3 (x + 5)

Решите для

x, 4 x + 5 = 3 (x + 5) : x = 10

Найдите age

Robert^{'} s age is : 10

Father^{'} s age is : 40

Популярные примеры

I am five years now.my son is half my age.How old is my son Selena is 6 years younger than her friend Taylor, and the sum of their ages is 48. What would betheir ages 4 years from now?13 years from now Steven will be twice as old as Maria. The current sum of the ages of Steven and Maria is 55. How old is Maria right now?Sophie is 6 years older than Simphiwe. In 3 years', time Sophie will be twice as old as Simphiwe. How old is Sophie now?kate is three times as old as her son. if kate is 30 years older than her son what are their ages