he

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

פּוֹפּוּלָרִי >

Anita is twice as old as Elena now. If the sum of their ages five years ago was 20, how old are they now?

פתרון

Anita is twice as old as Elena now. If the sum of their ages five years ago was 20, how old are they now?

פתרון

Elena^{'} s age is : 10

Anita^{'} s age is : 20

צעדי פתרון

Translate the problem into an equation:

2 x - 5 + x - 5 = 20

2 x - 5 + x - 5 = 20, x

פתור בשביל:

x = 10

age מצא את

Elena^{'} s age is : 10

Anita^{'} s age is : 20

דוגמאות פופולריות

Find two consecutive whole numbers that lies between. Find two consecutive whole numbers that sqrt(79) lies between.The sum of a number times 3 and 16 is at least 18 4 years ago, Rosanne won some money in the lottery and put it in a bank account that earns 3% interest compounded monthly. If Rosanne currently has 100.00 in the bank account, how much interest has she earned?Alec opened a savings account and deposited 100.00 as principal. The account earns 12% interest, compounded annually. What is the balance after 5 years?six more than the quotient of a number and 13