Logical Puzzle : How many cars are now in the car park?
One-tenth of the cars
in a car park are yellow.
Another car arrives and now
one-ninth of the cars are yellow.
Puzzle in Hindi
एक कार पार्क में पिले कारों की संख्या कूल कर का 1/10 भाग है।
तभी पार्किंग में एक नयी कार आती है और अब पिले कारों की संख्या कूल कारों का 1/9 राह जाती है
तो बताइए पार्किंग में कुल कितने कार हैं?
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Answer of the puzzle How many cars are now in the car park? is : 81
Initially there were 80 cars out of which 8 were yellow. After that 1 more car arrived and ratio of yellow car became 1:9.
You can some such equation using algebra, lets assume initially total cars were x so the yellow cars were x/10, later on one more car arrived and yellow cars became (x+1)/9 so this can be written in the form of algebra as follows
x/10 + 1 = (x+1)/9
(x+10)/10 = (x+1)/9
9x + 90 = 10x + 10
x = 80
So initially there were 80 cars.
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