# math

posted by .

A group of friends went to Mudville to watch the Mudville Sluggers play baseball. On the way to the game, three people rode in each car and seven took the train. On the way home, four people rode in each car and two people took the train. The same number of cars and people traveled to and from the game. How many friends could have been in the group? How many cars were used? (please show your work) :)

• math -

let the number of cars be x
1st trip:
number of people = 3x + 7
return trip:
number of people = 4x + 2

4x + 2 = 3x + 7
x = 5
So there were 5 cars

the number of people was 3(5) + 7 = 22

• math -

a sack contain 10 blue and 6 red crayons another sack contains 9 blue and 12 red crayons two crayons are drown at random without replacement from each sack. what is the probability that all the four crayons are blue? exactly one of the four crayons is red

## Similar Questions

1. ### Algebra I

1. A Passenger train's speed is 60mi/h and a freight train's speed is 40mi/h. The passenger train travels the same distance in 1.5 h less time than the freight train. How long does each train take to make the trip?
2. ### Math

The Maple street Youth Club took 22 people to the ball game. Three people rode to the game in each car, and seven people took the bus. On the way home, four people rode in each car, and the rest took the bus. How many people took the …

A group of 32 students went to the amusement park.All of them either rode the Ferris wheel or Roller coaster.Seventeen rode the Ferris wheel,23 rode the roller coaster,and 8 did both.How many rode only the Ferris wheel
4. ### math

Last year it rained on 63 days in mudville.There were 7 times as many days of rain in mudville as in desert hills.How many days did it rain in desert last year?
5. ### 5th grade math (word problems)

I'm not sure how to solve this: A group of friends went to an amusement park. 10 of them rode the ferris wheel, 15 rode carousel, and 11 rode the roller coaster. 7 of them rode both the ferris wheel & roller coaster. 4 rode both the …
6. ### math

A group of 21 people went to the country fair with 9 people on a stagecoach and 3 people in each buggy. On the return trip, 4 people rode in each buggy. How many people returned on the stagecoach?
7. ### math

lori recently rode her bike to her friend's house, 8 miles away. On her way back she rode 15mph faster than on her way there. She spent a total of 2 hours biking. What was her average speed each way?
8. ### Math

Alan rode his bike 2.6 miles from home to the park . He rode 6.03 miles to the park. Then he rode back home along the original route. How many miles did Alan ride in all?
9. ### math/ pre algebra

Lydia rode 243 miles in a three day bike trip. On the first day, Lydia rode 67 miles. On the second day, she rode 92 miles. How many miles per hour did she average on the third day if she rode for 7 hours?
10. ### Math

Alan rode his bike 2.6 miles from home to the park. He rode 6.03 miles at the park. Then he rode back home along the original route. How many miles did Alan ride in all?

More Similar Questions