it

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popolare Word Problems >

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?

Soluzione

M a ry, w h o i s s i x t ee n ye a rs o l d, i s f o u r t im es a s o l d a s h er b ro t h er . Ho w o l d w i ll M a ry b e w h e n s h e i s tw i ce a s o l d a s h er b ro t h er ?

Soluzione

Mary^{'} s age is : 16

Plug in to find h o w o l d w i ll M a ry b e w h e n s h e i s tw i ce a s o l d a s h er b ro t h er .

Fasi della soluzione

Translate the problem into an equation:

4 x = 16

Risolvi per

x, 4 x = 16 : x = 4

Trova Mary's age

: 16

Mary^{'} s age is : 16

Plug in to find h o w o l d w i ll M a ry b e w h e n s h e i s tw i ce a s o l d a s h er b ro t h er .

Esempi popolari

Martin has 3,582 in an account that earns 5% interest compounded annually.To the nearest cent, how much will he have in 1 year?Lamar earned some money doing odd jobs last summer and put it in a savings account that earns 11% interest compounded continuously. After 1 year, there is 100.00 in the account. How much did Lamar earn doing odd jobs?how much time does a car that drives 80km per hour need to drive through a 4km long tunnel Ling puts 800.00 into an account to use for school expenses. The account earns 12% interest, compounded annually. How much will be in the account after 5 years?Find three consecutive integers such that the sum of the first and third is 142