Mathematics:
Word math problems
Worksheets
Calculators
Flying
The airplane from Prague to Bratislava was flying at a speed of 60 km/h less and back by 70 km/h greater than the original speed. What was the original speed if the plane returned to Prague according to the timetable?
Correct answer:
v =
840
km/h
Step-by-step explanation:
s
/
(
v
−
6
0
)
+
s
/
(
v
+
7
0
)
=
2
s
/
v
1
/
(
v
−
6
0
)
+
1
/
(
v
+
7
0
)
=
2
/
v
v
(
v
+
7
0
)
+
v
(
v
−
6
0
)
=
2
⋅
(
v
+
7
0
)
(
v
−
6
0
)
1
0
v
=
8
4
0
0
v
=
8
4
0
0
/
1
0
=
8
4
0
=
8
4
0
km/h
Equation is non-linear.
Calculation:
Equation is linear and have one solution:
-10v+8400=0
x=840
Our simple
equation calculator
calculates it.
Try another example
Did you find an error or inaccuracy? Feel free to
write us
. Thank you!
Text - write and change what you want:
The airplane from Prague to Bratislava was flying at a speed of 60 km/h less and back by 70 km/h greater than the original speed. What was the original speed if the plane returned to Prague according to the timetable?
Your e-mail:
Thank you for submitting an example text correction or rephasing. We will review the example in a short time and work on the publish it.
Tips for related online calculators
Looking for calculator of
harmonic mean
?
Looking for a
statistical calculator
?
Are you looking for help with
calculating roots of a quadratic equation
?
Do you have a linear equation or system of equations and looking for its
solution
? Or do you have
a quadratic equation
?
Do you want to
convert velocity (speed) units
?
Do you want to
convert time units
like minutes to seconds?
You need to know the following knowledge to solve this word math problem:
statistics
harmonic mean
algebra
quadratic equation
equation
expression of a variable from the formula
Units of physical quantities:
velocity
time
Themes, topics:
motion problems
Grade of the word problem:
practice for 13 year olds
practice for 14 year olds
high school
Related math problems and questions:
Minus round
The outdoor temperature yesterday reached a low of −4.5°F. Between what two integers was the temperature?
Passenger 18
Passenger and freight trains are operated between stations I and II, where the distance between stations is 16 km. The speed of the passenger trains is 100km/h, and the speed of the freight trains is 60km/h for a single-line railway track. The waiting tim
A farmer 5
A farmer has 220 apples. Each day he sells 14 1/8. How much does he sell in 5 days?
A hairstylist
A hairstylist schedules 1/4 hour to trim a customer's hair and 1/6 hour to style the customer's hair. The hairstylist plans to work 2 1/3 hours daily for five days weekly. How many appointments can the hairstylist schedule weekly if each customer must be
A turkey
Alana was cooking a turkey. It takes 4 1/2 hours to cook. She checks it every 20 min, 1/3 of the hour. How many times will she check it before it is cooked?
MP3 player
Mary plans to buy a new MP3 player for 90 USD. And every month, the amount he saved in the previous month doubles. If she saves 3 USD in the first month, how many months will Mary save enough to buy an MP3 player?
Retirement saving
Deryl wishes to save money to provide for his retirement. Beginning one year from now, he will begin depositing the same fixed amount each year for the next 30 years into a retirement savings account. Starting one year after making his last deposit, he wi
Market open
A certain market opens for sales every 7th day of the week. If it opened last on a Friday, what day of the week will the market be opened again after nine months? (Hint: a month is 30 days)
Nicola 2
Nicola is playing a video game where each round lasts 7/12 an hour. She has scheduled 3 3/4 hours to play the game. How many rounds can Nicole play?
Jimmy
Jimmy earns an average of PHP 140.50 per hour in offering a Math tutor. At least how many hours does he need to work to earn Php 1,100.00?
A diesel car
A diesel car costs $2599 more than an unleaded petrol car and travels an average of 25,000km per year. Diesel petrol has a consumption rate of 7.4L per 100km and costs $1.39 per liter. Unleaded gasoline has a consumption rate of 8.5L per 100km and costs $
Cost structure
You are currently trying to decide between two cost structures for your business: one with a greater proportion of short-term fixed costs and another more heavily weighted to variable costs. Estimated revenue and cost data for each alternative are as foll
Supplies 48553
Marek had 325 CZK. He bought a T-shirt for 129 CZK and wanted to spend 276 CZK on fishing supplies. How many CZK did his parents add to his fishing gear? How many weeks did they cut his pocket money by CZK 10 before he paid off the debt?
Jewelry factory
In a jewelry factory, three assemblers make beaded necklaces. Marcus can make 22 necklaces per hour all day long. Anita can make 25 necklaces for her first three hours of the day and then slow down to 16 necklaces for the rest of the day. Yara can make 2
Per shift
Two cars take beets from the same field to the sugar factory. Both drive at the same average speed. A car with mechanical tipping needs 15 minutes to travel to the sugar factory and back. A car that does not have mechanical tipping needs 6 minutes longer
If you 2
If you deposit $4000 into an account paying 9% annual interest compounded monthly, how long until there is $10000 in the account?
Compound Interest
If you deposit $6000 in an account paying 6.5% annual interest compounded quarterly, how long until there is $12600 in the account?
all math problems
18669
arithmetic
4191
rounding
458
division
139
unit conversion
103
volume
80
area of a shape
76
percentages
60
length
56
time
55
fractions
53
cuboid
44
algebra
5513
basic functions
5881
combinatorics
1002
geometry
3057
goniometry and trigonometry
559
numbers
6178
physical quantity
6343
planimetrics
3380
solid geometry
2283
statistics
771
themes, topics
3007
New math problems
Popular math problems
Harder math problems
The easiest word problems
Language
sk
cz
en