ar

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

شائع Word Problems >

Deb can run 5 kilometers in 20 minutes. If she runs at the same speed, how long would it take Deb to run 3 kilometers?

الحلّ

De b c an r u n 5 ki l o m e t ers in 20 min u t es . I f s h e r u n s a t t h e s am e s p ee d, h o w l o n g w o u l d i t t ak e De b t o r u n 3 ki l o m e t ers ?

الحلّ

trip 2 time : 12

خطوات الحلّ

Given Time:

trip 1 : 20

Given Distance:

trip 1 : 5

trip 2 : 3

Represent the speed in terms of

x :

trip 1 : x

trip 1 Speed x Time 20 Distance 5

Write an equation for trip 1Distance = Speed

\cdot

Time

5 = x \cdot 20

5 = x \cdot 20, x

حلّ لـ:

x = \frac{1}{4}

speed : \frac{1}{4}

Represent the time in terms of

y :

trip 2 : y

trip 2 Speed \frac{1}{4} Time y Distance 3

Write an equation for trip 2Distance = Speed

\cdot

Time

3 = \frac{1}{4} y

3 = \frac{1}{4} \cdot y, y

حلّ لـ:

y = 12

trip 2 time : 12

أمثلة شائعة

7000 are invested in a bank account at an interest rate of 4 percent per year.Find the amount in the bank after 9 years if interest is compounded annually.Four times the sum of twice a number and six is thirty two. Find the number Two more than the quotient of a number and 9 equals 5.cube has a volume of 3375 cubic units. Calculate the length of one side of the cube. v=1wh A table is on sale for 285.00 , which is 24%less than the regular price.What is the regular price?