Car Racing

Algebra Level 1

In a car racing, the car with entry number 7 is currently in the 13th position. It speeds up and overtakes the 12th placer and two more cars in front of it. Its now at the nth position

Find the value of n + x + y, where x is the entry number of the car, and y is the number of cars it overtook.


The answer is 20.

Gian Alix by Gian Alix , 34, Canada

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2 solutions

Gian Alix
Mar 30, 2014

x = 7. It overtook 3 cars: the 12th position + two more cars. So y = 3. Because it overtook the 12th placer, it is now at the 12th position. If it overtook 1 car, it's now at the 11th. If it overtook one more, then it's now at the 10th. So n = 10. n + x + y = 10 + 7 + 3 = 20.

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in race if u overtakes a person u wil be in the place of that person i.e., if u overtakes 1st place u wil be in the 1st place. this question is similar to the above idea. now x=7 (car number) then y=3 (No. of car he overtook) finally z=10 (the place he is now-he overtook 3 places from 13th so it is 10th ). now x+y+z=7+3+10=20

Sarath Ceh - 7 years, 2 months ago
Mohammad Mijan
Apr 8, 2014

n+x+y =3+7+10=20 Where n=3 is the recent position of the car, x=7 is the entry no. of the car And y=10 the no. of car of overtake.

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