The x-t table for a car running a race on a horizontal straight road is given. There are checkpoints at x = 1 km and x = 3 km. Each time the car reaches the checkpoints, it stops for refuelling. Assuming the car runs straight to the given positions without any extra turning or motion, calculate the number of times the car is refilled.

Select the correct answerThree cars A, B and C started from a point at 5 pm, 6 pm and 7 pm respectively and travelled at uniform speeds of 60 km/hr, 80 km/hr and x km/hr respectively in the same direction. If all the three met at another point at the same instant during their journey, then what is the value of x?Options120105100110

Car X started from town M at 6 a.m. and went towards town N. Car Y started from M at 7 a.m. in the same direction as X. It overtook X after covering 40% of the distance MN. Both cars then continued travelling towards N. On reaching N, Y turned back immediately and crossed X after covering 12% of the distance NM. Find the time taken by car Y to cover the distance MN.5 hours7.5 hours4.5 hours6 hours

Suppose there is a circle. There are petrol pumps on that circle. Petrol pumps are numbered to (both inclusive). You have two pieces of information corresponding to each of the petrol pump: (1) the amount of petrol that particular petrol pump will give, and (2) the distance from that petrol pump to the next petrol pump.Initially, you have a tank of infinite capacity carrying no petrol. You can start the tour at any of the petrol pumps. Calculate the first point from where the truck will be able to complete the circle. Consider that the truck will stop at each of the petrol pumps. The truck will move one kilometer for each litre of the petrol.Input FormatThe first line will contain the value of .The next lines will contain a pair of integers each, i.e. the amount of petrol that petrol pump will give and the distance between that petrol pump and the next petrol pump.Constraints:Output FormatAn integer which will be the smallest index of the petrol pump from which we can start the tour.Sample Input31 510 33 4Sample Output1ExplanationWe can start the tour from the second petrol pump.Contest ends in 2 hoursSubmissions: 4Max Score: 10Difficulty: HardRate This Challenge: More Python 31#!/bin/python32​3import math4import os5import random6import re7import sys8​9#10# Complete the 'truckTour' function below.11#12# The function is expected to return an INTEGER.13# The function accepts 2D_INTEGER_ARRAY petrolpumps as parameter.14#15​16def truckTour(petrolpumps):17    # Write your code here18​19if __name__ == '__main__':20    fptr = open(os.environ['OUTPUT_PATH'], 'w')21​22    n = int(input().strip())23​24    petrolpumps = []25​26    for _ in range(n):27        petrolpumps.append(list(map(int, input().rstrip().split())))28​29    result = truckTour(petrolpumps)30​31    fptr.write(str(result) + '\n')32​33    fptr.close()34​

A car travels at a uniform speed of 60 kmph for 30 minutes and then at a uniform speed of 90 kmph for the next 40 min. Calculate the total distance travelled by car in km.

he figure shows the flow of traffic (in vehicles per hour) through a network of streets.(a) Solve this system for xi, i = 1, 2, . . . , 5.   (b) Find the traffic flow when x3 = 0 and x5 = 100.(c) Find the traffic flow when x3 = x5 = 100.