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Популярное Word Problems >

Tommy is 3 years older than Fred. 4 years ago, Tommy was 4 times as old as Fred. Calculate Fred's present age.

Решение

T o mm y i s 3 ye a rs o l d er t han F re d . 4 ye a rs a g o, T o mm y w a s 4 t im es a s o l d a s F re d . C a l c u l a t e F re d^{'} s p rese n t a g e .

Решение

Fred^{'} s age is : 5

Шаги решения

Translate the problem into an equation:

x - 4 = 4 (x - 3 - 4)

Решите для

x, x - 4 = 4 (x - 3 - 4) : x = 8

Найдите Fred's age

: 5

Fred^{'} s age is : 5

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