1 The length of a rectangle is 12 ft longer than twice the w

1. The length of a rectangle is 12 ft longer than twice the width. If the perimeter is 72ft, find the length and the width of the rectangular.

2. A driver average 45 miles per hour and took 13 hours to travel between two cities. What is the distance between the two cities?

3. At an important meet, Rosalba won the women\'s 400 metes in 56.07 seconds. Rosalba ran at an average rate of what meters per second?. (Round of to the nearest hundredth.

4. One number is 7 more than another. If the sum of the two number is 153, what is the two numbers

5. One number is 27 less than another number. What if the sum of the two number is 95, find the two numbers. What is the larger number?

6. Jackie has a jar with dimes and quarters in it. What jar has 8 more quarters than it has dimes. If the value of the coins is $6.20, how many quarters are in the jar?

Solution

1)
Let the width be x ft
then length = 2x+12

perimeter = 2*(length + breadth)
72 = 2*(2x+12 + x)
36 = (3x+12)
24=3x
x = 8 ft

so,
width = 8 ft
length = 2x+12 = 2*8+12 = 28 ft

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