vi

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Phổ biến Word Problems >

Tom is three times Karin’s age. In ten years, he will be double Karin’s age. How old is Tom now?

Lời Giải

T o m i s t h ree t im es K a r in ’ s a g e . I n t e n ye a rs, h e w i ll b e d o u b l e K a r in ’ s a g e . Ho w o l d i s T o m n o w ?

Lời Giải

Tom^{'} s age is : 30

Các bước giải pháp

Translate the problem into an equation:

3 x + 10 = 2 (x + 10)

Giải

x, 3 x + 10 = 2 (x + 10) : x = 10

Tìm Tom's age

: 30

Tom^{'} s age is : 30

Ví dụ phổ biến

The diameter of a circle is 26 kilometers. What is the circle's chu vi?Twice the hiệu of a number and 3 is 9.Six less than the product of 3 and a number is equal to 5.9 plus 6 times a number is 9 times the number Mary, who is sixteen years old, is four times as old as her brother. How old will Mary be when she is twice as old as her brother?