ru

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Популярное Word Problems >

A boy is 6 years older than his sister. In three years, he will be twice her age. what are their present ages?

Решение

A b oy i s 6 ye a rs o l d er t han hi s s i s t er . I n t h ree ye a rs, h e w i ll b e tw i ce h er a g e . w ha t a re t h e i r p rese n t a g es ?

Решение

Boy^{'} s age is : 9

Sister^{'} s age is : 3

Шаги решения

Translate the problem into an equation:

x + 3 = 2 (x - 6 + 3)

Решите для

x, x + 3 = 2 (x - 6 + 3) : x = 9

Найдите age

Boy^{'} s age is : 9

Sister^{'} s age is : 3

Популярные примеры

what is the result when the number 33 is increased by 58%What is the radius of the circle that has a окружность of 23pi inches?Rose opened a savings account and deposited 1,000.00. The account earns 9% interest, compounded monthly. If she wants to use the money to buy a new bicycle in 2 years, how much will she be able to spend on the bike?Charlos purchased a machine for 85, 000 after a discount of 25%. Calculate the original price of the machine Bill invested 4200 in an account that pays an annual interest rate of 3.1%, compounded monthly. Find the amount in the account after one year, assuming no withdrawals are made.Do not round any intermediate computations, and round your answer to the nearest cent.