ar

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

شائع Word Problems >

Six years ago a father was twelve times as old as his son. In three years time the father will be three times as old as his son. How old are they now?

الحلّ

S i x ye a rs a g o a f a t h er w a s tw e l v e t im es a s o l d a s hi s so n . I n t h ree ye a rs t im e t h e f a t h er w i ll b e t h ree t im es a s o l d a s hi s so n . Ho w o l d a re t h ey n o w ?

الحلّ

Father^{'} s age is : 30

Boy^{'} s age is : 8

خطوات الحلّ

Translate the problem into an equation:

x - 6 = 12 (y - 6), x + 3 = 3 (y + 3)

x - 6 = 12 (y - 6), x + 3 = 3 (y + 3) : x = 30, y = 8

Father^{'} s age is : 30

Boy^{'} s age is : 8

أمثلة شائعة

An initial amount of 2100 is invested in an account at an interest rate of 5% per year, compounded continuously. Assuming that no withdrawals are made, find the amount in the account after two years. Do not round any intermediate computations, and round your answer to the nearest cent.The radius of a circle is 4 miles. What is the circumference four more than the quotient of a number and 7 is 2 The length of a rectangle is 4 miles and the width is 10 miles. What is the area of the rectangle?the sum of 3 consecutive numbers is772. What is the smallest of the numbers