three hundred passengers are travelling in white, silver and black cars; each of these cars is carrying 6, 5 and 3 passengers, respectively. if the number of white and silver cars is equal and there is only one black car, what is the total number of cars?
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total number of cars = 55 if 300 passengers are travelling in white, silver and black cars; each of these cars is carrying 6, 5 and 3 passengers, respectively
Step-by-step explanation:
number of white and silver cars is equal and there is only one black car
White Cars = C
Silver Cars = C
Black Car = 1
Total Cars = C + C + 1 = 2C + 1
Number of passengers = 6C + 5C + 3
= 11C + 3
11C + 3 = 300
=> 11C = 297
=> C = 27
Total Cars = 2C + 1 = 2*27 + 1 = 55
total number of cars = 55
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