vi

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Phổ biến >

The sum of the ages of Dakota and Patricia is 53 years. 7 years ago, Dakota's age was 2 times Patricia's age. How old is Dakota now?

Lời Giải

The sum of the ages of Dakota and Patricia is 53 years. 7 years ago, Dakota's age was 2 times Patricia's age. How old is Dakota now?

Lời Giải

Dakota^{'} s age is : 33

Các bước giải pháp

Translate the problem into an equation:

x - 7 = 2 (53 - x - 7)

Giải

x, x - 7 = 2 (53 - x - 7) : x = 33

Dakota^{'} s age is : 33

Ví dụ phổ biến

Tom is eight years older than claire. The sum of their age is 54. How old is Tom Jonathan is now three times as old as his son is. Twelve years ago, he was six times as old as his son was. Find the present age of each.Diane is six years younger than one-half his father's age.If the sum of their ages is 63, find the product of their ages.Pat is 20 years older than James. In two years he will be twice as old as James. How old are they now?The sum of the ages of Jose and Mackenzie is 100 years. 10 years ago, Jose's age was 3 times Mackenzie's age. How old is Jose now?