Given Data:
Time is taken = 24 seconds (to pass the pole)
Length of the train = 240 m
To Find:
Time to pass a 650m long platform =?
Solution:
The total distance traveled by train to cross a pole is equal to the length of the train; 240 m.
Distance = 240 m (in case of a pole)
Speed = distance/ time
Speed = 240 m/ 24 seconds
Speed = 10 m/s
So, the speed our train is traveling is 10 m/s.
Now, the time taken by the same train to cross a platform of 650 m can be calculated as,
Total distance = 650 m (platform length) + 240 m (train length)
Total distance = 890 m
Speed = distance/ time
Time = distance/ speed
Time = 890 m / 10m/s
Time = 89 seconds.
So, the time that it will take a train with a speed of 10 m/s and 240 m long to cross a plate form of 650 m is 89 seconds.
To know more about the relationship between speed, distance, and time, check out the link below:
brainly.com/question/23774048?referrer=searchResults
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Estimate:
Bill = $20 approximately.
5% tax on $20 = 20/20=$1
20 % on ($20) = $4
Total cost = $20+1+4 = $25
Total bill = $25 approximately.
Exact calculations
bill = 19.68
tax 5% = 0.98
Tip 20% of original = 3.94
Total bill = 19.68+0.98+3.94 = 24.60
Answer:
<h2>$175 per week </h2>
Step-by-step explanation:
In this problem we are expected to calculate the amount Mary will save per week based on her 25% plan on her weekly earning of $700
hence we have to calculate 25% of $700 and that will be the answer to the problem
we have
weekly savings = (25/100)*700
weekly savings = 0.25*700
weekly savings= $175
<em>Hence Mary will save $175 per week if she follows the 25% plan of her weekly earnings</em>
Answer:
Step-by-step explanation:
you divide the two to the y, which is x=3/2y
then, you simplify the second equation to y, which is -3y= -4x+12
then, you substitute the x=3/2y into the second equation,
-3y = -6+12
-3y = 6
y = -2
Substitute the y into the first equation, x= 3/2y,
x = -3
