en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Word Problems >

A plane can fly 1200 miles in the same time as it takes a car to go 400 miles. If the car travels 100 mph slower than the plane, find the speed of the plane.

Solution

A pl an e c an f l y 1200 mi l es in t h e s am e t im e a s i t t ak es a c a r t o g o 400 mi l es . I f t h e c a r t r a v e l s 100 m p h s l o w er t han t h e pl an e, f in d t h e s p ee d o f t h e pl an e .

Solution

plan e^{'} s speed : 150

Solution steps

Translate the problem into an equation:

\frac{1200}{x} = \frac{400}{x - 100}

Solve for

x, \frac{1200}{x} = \frac{400}{x - 100} : x = 150

plan e^{'} s speed : 150

Popular Examples

The population of a city decreases by 4.4% per year. If this year's population is 135,000, what will next year's population be, to the nearest individual?4 less than the quotient of 5 and number you borrowed 1639 from a bank which charges 1.7% interest per year .How much interest did you owe at the end of one year Two increased by the product of a number and 8 is at least 26 22 less than 5 times a number off