A train leaves a station at 11am, heading north. Another train, 320 km away, leaves at the same time, heading south. The average speed of the train heading north is 20 km/hr faster than that of the...

A train leaves a station at 11am, heading north. Another train, 320 km away, leaves at the same time, heading south. The average speed of the train heading north is 20 km/hr faster than that of the...

How many sweets did each of them have at first?

answer are a.k=13.5;13.5y=x b.k=1.5;y=1.5x c.k=1.5;y=1.5/x d.k=13.5;xy=13.5

68 books on a book shelf, books are equally distributed onto 9 shelves and last shelf has 5 books. how many books are on each of the 9 shelves?

Six boys are in a race. Earl is 18 yards ahead of Al. Chuck is 12 yards behind Earl. Bill is 8 yards ahead of Chuck. Don is 8 yards ahead of Earl and Frank is 17 yards ahead of Chuck. Don is leading...

He throws a dice 600 times. He scores one, 200 times. Is the dice fair?

Can you help me figure out how to solve this problem?

A generator needs a fixed amount of fuel to keep it running 2 hours a day. After running for 6 days, the generator fuel tank was 2/3 full. After 11 more days, 3 1/2 liters of fuel were left in the...

this Word problem is a variable problems

A fishing rod and a reel cost a total of $110. The reel cost $100 more than the rod. What is the final cost of the rod and the reel?

A patrol boat travels eleven hours on a trip downstream with a six-mph current. The return trip against the same current takes fourteen hours. Find the speed of the boat in still water.

Before beginning voice lessons, Dakota already knew how to sing 9 pieces, and she expects to learn 2 new pieces during each week of lessons. How many weeks of lessons will Dakota need before she will...

I need to cover my salary cost of $590,968 I charge my customers $86hr for 6 hours of work per day 5 days a week. Each job will require 2 people (total 12hrs per job). The cost for the contractor...

Need done fast as possible

Heather is twice as old as armida while kaye is 35 years younger than heather. If 1/2 the age of armida 5 years ago, and 1/3 of the age of heather 10 years from now, is twice the age of Kaye, how...

A Ferris wheel has a diameter of 120 meters, a circumference of 377 meters and an area of 11,309 m^2. There are 30 cars equally spread around the Ferris wheel for people to sit or stand. Find the...

a plaque has a perimeter of 17.5 inches. It is three quarters as tall as it is wide. what is its width in inches.

The probability that the biased coin will land on a tail is 0.3 Chris is going to flip the coin 150 times. Work out an estimate for the number of times the coin will land on a tail....

Answer are a.42 ounces b.84 ounces c.102 ounces d.126 ounces

There are white, blue, and red boats in a marina. Two-thirds of the boats in the marina are white, 4/7 of the remaining boats are blue, and the rest are red. If there are 15 red boats,...