Same Direction Travel:
A train leaves a train station at 1 p.m. It travels at an average rate of 60 mi/h. A high-speed train leaves the same station an hour later. It travels at an average rate of 90 mi/h. The second train follows the same route as the first train on a track parallel to the first. In how many hours will the second trains catch up with the first train?
100
x=22
Solve for x
4/(x-2)=5/(x+3)
100
34 m/s
What is the speed, in meters per second, of a paper airplane that flies 102 meters in 3 seconds?
100
x<3
2x -5 < 1
200
20%
5 is what percent of 25
200
1.5 hours
Noya drives into the city into the city to buy a software program at a computer store. Because of traffic conditions, she averages only 10 mi/h. On her drive home she averages 30 mi/h. If the total travel time is 2 hours, how long does it take her to drive to the computer store?
200
x=-4
3x/4=(2x-1)/3
200
90 mile/hour
Jane ran a distance of 120 meters in 1 ⅓ hour.
What is her speed in meters per hour?
200
x>12
x/2-5 > 1
300
24%
The enrollment at a local elementary school had 200 students last year. This year the enrollment has decreased by 48 students. What is the percent of decrease (round to the nearest tenth of a percent)?
300
x=50
3x/5-5=x/2
300
$10
In the supermarket, the price for apples is, $2.50 for 4 apple, then how much will you pay for 16 apples. (Round to the nearest cents)
300
x<-40
4-x/5 > 12
400
85+8.5=93.5
Linda found the regular price for a pair of shoes is $100, but she got 15% discount, and she had to pay 10 % for the tax, so much would she pay for the shoes? (Round to the nearest cents).
400
7/2=3mins 30 seconds
If 4/7 of a tank can be filled in 2 minutes, how many minutes will it take to fill the whole tank?
400
x≤35/2
Set builder notation:
Interval:
Graph
Solve for x
Set builder notation:
Interval:
Graph
-2x/5 ≥- 7
500
.5/10 =5%
Suppose you measure a CD and record its diameter as 10 cm, find the percent error in your measurement.