ru

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Популярное Word Problems >

Bob's sister is 6 years older than twice Bob's age. The sum of their ages is 42 . How old is Bob?

Решение

B o b^{'} s s i s t er i s 6 ye a rs o l d er t han tw i ce B o b^{'} s a g e . T h e s u m o f t h e i r a g es i s 42 . Ho w o l d i s B o b ?

Решение

Bob^{'} s age is : 12

Шаги решения

Translate the problem into an equation:

42 - x - 6 = 2 x

Решите для

x, 42 - x - 6 = 2 x : x = 12

Bob^{'} s age is : 12

Популярные примеры

Maryl is 40 years older than Shaira. 10 years ago, the sum of their ages was 40.If 3 times a number is increased by 22 , the result is 14 less than 7 times the number. What is the number?Maryl is 5 years younger than Shaira. 4 years ago, the sum of their ages was 12.There are two numbers whose sum is 53. Three times the smaller number is equal to 19 more than the larger number. What are the numbers?Find the future value and interest earned if 8704.56 is invested for 7 years at 5% compounded continuously