המרוץ הגדול

במירוץ מכוניות שנערך במסלול מעגלי מתאר כתב הטלוויזיה את מספר המכוניות שהשתתפו כך: "אם נחבר ברגע זה של המרוץ שליש ממספר המכוניות, שלפני המכונית האדומה עם שלושה רבעים ממספר המכוניות שאחרי המכונית האדומה, נקבל את מספר המכוניות במרוץ". כמה מכוניות השתתפו במרוץ?

+ - רמז דק Click to collapse

+ - רמז עבה Click to collapse

+ - פתרון Click to collapse

הוספת תגובה

תגובות (3)

פרופ אביקם גזית
לפני 11 שנים

כל הכבוד למעורבות לדרך החשיבה שלך

בברכה
אביקם

0 אוהב

השב

דיווח

שיתוף

כתובת URL מקוצרת:
אמיר
לפני 11 שנים

מסלול מעגלי ולכן המכוניות לפני המכונית האדומה הן גם המכוניות אחרי המכונית האדומה, ולכן אם X ייצג את מס' המכוניות למעט האדומה : ׁ
(X +1 = X *(1/3 +3/4

13 =X = 12 , X+1

0 אוהב

השב

דיווח

שיתוף

כתובת URL מקוצרת:
עבד
לפני 12 שנים

התשובה 13 מכוניות, המירוץ מעגלי:-)

0 אוהב

השב

דיווח

שיתוף

כתובת URL מקוצרת:

הנצפים ביותר

file0001545664729dine

לאן נעלם השקל?

file0001987643607__copy_copy_copy

תפוח מיותר?

file00019086885locomotive

מהו שם הנהג?

file0001964942635numbers_copy

איזה יום?

תגובות אחרונות

קכית

כממ

ארבעה כלבים רצים

בערך לפני 1 חודש

שולמית גבריאלוב

גמני שואלת. אולי כדאי להמחיש את הפתרון עם גפרורים.

תרגיל בגפרורים

לפני 9 דקות

יבגני

כתבתי תוכנה ואחרי שעות של חישוב (בהתאם לבעיה עם פתרון אקספוננציאלי) קיבלתי פיתרון המצורף בהמשך.הפיתר...

מסעי המלכה של סאם לויד...

לפני 10 דקות

אלי

ילד ראשון לא לקח.השני לקח2.השלישי לקח 1.רביעי לקח 1. חמישילקח 1.שישי לקח1.אז ילד שני נתן לראשון1 כי ...

תפוח מיותר?

לפני 10 דקות

תהילה

‏מה פתאום יש לפחות ‏שלוש ילדים

כמה ילדים?

לפני 10 דקות

עמוד 1 מתוך 4

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