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Math Help - word problems

  1. #1
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    word problems

    I hate word problems, someone please help

    1.
    At 8 am, a truck leaves a depot, traveling west at 45mph. Two hours later, a car leaves the same depot and travels at 60 mph until it overtakes the truck. At what time of day does the car overtake the truck?

    2.
    Find the three consecutive odd integers so that the sum of twice the largest and 3 times the smalled is 73

    Thanks..
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  2. #2
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    Quote Originally Posted by darkangels View Post
    I hate word problems, someone please help

    1.
    At 8 am, a truck leaves a depot, traveling west at 45mph. Two hours later, a car leaves the same depot and travels at 60 mph until it overtakes the truck. At what time of day does the car overtake the truck?
    45*t=60*(t-2) Have the same way lengh. but Car use times less 2 hours.

    then t+8 AM ,that is "what's time"
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  3. #3
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    Quote Originally Posted by darkangels View Post
    I hate word problems, someone please help
    2.
    Find the three consecutive odd integers so that the sum of twice the largest and 3 times the smalled is 73

    Thanks..
    Odd numbers are separated by two. If we let x to be the smallest of the three consecutive odd integers, then the numbers in question are:
    \{x, x+2, x+4\}

    Translating the words in algebra: 2(x+4)+3x=73

    Solve for x and plug in the original set.
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  4. #4
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    Quote Originally Posted by darkangels View Post
    I hate word problems, someone please help



    2.
    Find the three consecutive odd integers so that the sum of twice the largest and 3 times the smalled is 73

    Thanks..
    "3 times the smalled " suggest u mean other two smaller integers?or smallest integer?

    Let's suggest the largest integer of three consecutive odd integers is x,then other smalls integer are x-2 and x-4 . (that's point)
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  5. #5
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    Quote Originally Posted by darkangels View Post
    I hate word problems, someone please help

    1.
    At 8 am, a truck leaves a depot, traveling west at 45mph. Two hours later, a car leaves the same depot and travels at 60 mph until it overtakes the truck. At what time of day does the car overtake the truck?

    2.
    Find the three consecutive odd integers so that the sum of twice the largest and 3 times the smalled is 73

    Thanks..
    1. 8.00 Truck leaves at 45mph
    10.00 Car leaves at 60mph

    12:00 Truck has gone 4 x 45 = 140 miles
    12:00 Car has gone 2 x 60 = 120 miles

    13:00 Truck has gone 5 x 45 = 185 miles
    13:00 Car has gone 3 x 60 = 180 miles

    14:00 Truck has gone 6 x 45 = 230 miles
    14:00 Car has gone 4 x 60 = 240 miles

    12:30 Truck has gone 5.5 x 45 = 207.5 miles
    12:30 Car has gone 3.5 x 60 = 210 miles

    12:20 Truck has gone 5 1/3 x 45 = 200 miles
    12:20 Car has gone 3 1/3 x 60 = 200 miles

    OK. Trial and error does the trick after a few minutes. The car will overtake the truck at 12:20:01.

    2. Again, trial and error does the trick. The numbers are 13, 15, 17.

    2 x 17 = 34
    +
    3 x 13 = 39
    = 73
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  6. #6
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    thank you soo much guys... i appreciate a lot ... Bruce I liked your method
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