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Word Problems

Homework #1 With a tailwind, a helicopter flies 270 miles in 1.5 hours. When the helicopter flies back against the same wind, the trip takes 3 hours. What is the helicopter’s speed in still air? What is the speed of the wind? w = speed of wind (mph) h = speed of the helicopter (mph) With the wind Against the wind

Homework #1 With a tailwind, a helicopter flies 270 miles in 1.5 hours. When the helicopter flies back against the same wind, the trip takes 3 hours. What is the helicopter’s speed in still air? What is the speed of the wind? w = speed of wind (mph) h = speed of the helicopter (mph) Helicopter = 135 mph Wind = 45 mph

Homework #2 A barge on the Sacramento river travels 24 miles upstream in 3 hours. The return trip take the barge only two hours. Find the speed of the barge in still water. b = speed of barge (mph) c = speed of the current (mph) With the current Against the current

Homework #2 A barge on the Sacramento river travels 24 miles upstream in 3 hours. The return trip take the barge only two hours. Find the speed of the barge in still water. b = speed of barge (mph) c = speed of the current (mph) barge = 10 mph current = 2 mph

Algebra 1B Homework #3 Bubba has a collection of 95 coins, consisting of only nickels, dimes and quarters. If the number of quarters and dimes combined is 60, and the total value of all his coins is $12.70, how many dimes does he have? Define variables: Write two equations d = number of dimes E1 q = number of quarters E2 Number of nickels = 35 Value of nickels = $1.75 Value of dimes and quarters = $10.95 Mr DeVor

Homework #1 The length of a rectangle is three more than it’s width. If the perimeter is 66 meters, find the area of the rectangle. Define variables: Write two equations L = length E1 W = width E2

Algebra 1B Extra Credit Problem From homework on 12/12 The numerator of a fraction is one less than the denominator. If 1 is subtracted from the numerator, and the denominator is unchanged, the resulting fraction has a value of 3/4. Find the original fraction. Define variables: Write two equations n = Numerator E1 d = Denominator E2 Mr DeVor