Day 3 – Puzzle 7


SUBMIT YOUR ANSWER



Solution : 81
പാർക്കിൽ N കാറുകൾ ഉണ്ട് എന്ന് വിചാരിക്കുക. അവയിൽ M മഞ്ഞ കാറുകൾ
മഞ്ഞ കാറുകളുടെ അനുപാതം
M/N = 1/10. N = 10 M
ഒരു മഞ്ഞ കാറുകുടി വന്നാൽ മഞ്ഞ കാറുകളുടെ അനുപാതം
(M + 1)/(N + 1) = 1/9
(M + 1)/ (10M + 1) = 1/9
ഈ സമവാക്യങ്ങളിൽ നിന്ന് M കണ്ടുപിടിക്കാം . M = 8

Let there be N cars in the parking lot. Let M of them be yellow
M/N = 1/10. N = 10 M
One more yellow car comes. The fraction of yellow cars now is
(M + 1)/(N + 1) = 1/9
(M + 1)/ (10M + 1) = 1/9
Solving for M we get M = 8. Substituting back, we get N = 80. So there are 81 cars in the parking lot now.

Best Explanation : Anusha Ramesh. V
“Total no. of cars before the arrival of new car = X
X/10 = Y ; X=10Y
After the arrival of new car,

(X+1)/9 = Y+1 (because 1/9 is greater than 1/10.Therefore the new car is in yellow colour )
By substituting X as 10Y in the eqn (X+1)/9=Y+1, we get Y=8 and X=80
Therefore total no. of cars in the car park now = X+1=81″

Attempts614
Correct257
Best ExplanationAnusha Ramesh. V

First 10 Correct Answers

Sl NoPrimaryHigh SchoolOthers
1SaanviVarun A KumarHarshana Sherin
2Aiwin BinoyiGeofferin George SajiRoshan Varghese
3Nishan sherafAjnasAleena k
4ALAKANANDHA KSREE GOVIND I KAHAMMAD RAFEEF P
5HrishikeshAfreenAdwita V
6Daniya DilshaALPHIN BINOYIFathimath Sharafiya UK
7Vinayak D NairPradhithAbhivad A S
8ആത്മിക സി എസ്AlmasAthira R P
9Devika SunilAbhirami KKrishnakumari P
10Vedathmikaശിവനന്ദ. EZANZEENA N

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