Question

Алеша и Боря бросают баскетбольный мяч в корзину. У Алеши 9 попаданий из 15-и бросков, а у Бори 12 попаданий из 18 бросков. Какая часть всех бросков у каждого мальчика оказалась неудачной? Чей результат лучше? (Дроби)

Answer 1

Алёша  9/15=3/5*3=9/15(попаданий) 9/15-15/15=6/15(промахов) Боря  12/18=2/3*5=10/15(попаданий) 10/15-15/15=5/15(промахов)  9/15 < 10/15 Ответ : Борин результат был лучше Алёши.  

Answer 2

Calculation of Unsuccessful Shots

To determine the fraction of unsuccessful shots for each boy, we need to subtract the number of successful shots from the total number of shots attempted.

For Alesha: - Total shots attempted: 15 - Successful shots: 9

To calculate the number of unsuccessful shots for Alesha, we subtract the number of successful shots from the total shots attempted: Unsuccessful shots for Alesha = Total shots attempted - Successful shots = 15 - 9 = 6

For Borya: - Total shots attempted: 18 - Successful shots: 12

To calculate the number of unsuccessful shots for Borya, we subtract the number of successful shots from the total shots attempted: Unsuccessful shots for Borya = Total shots attempted - Successful shots = 18 - 12 = 6

Fraction of Unsuccessful Shots

To find the fraction of unsuccessful shots, we divide the number of unsuccessful shots by the total shots attempted for each boy.

For Alesha: - Unsuccessful shots: 6 - Total shots attempted: 15

Fraction of unsuccessful shots for Alesha = Unsuccessful shots / Total shots attempted = 6 / 15 = 2/5

For Borya: - Unsuccessful shots: 6 - Total shots attempted: 18

Fraction of unsuccessful shots for Borya = Unsuccessful shots / Total shots attempted = 6 / 18 = 1/3

Comparison of Results

To determine whose result is better, we compare the fractions of unsuccessful shots for Alesha and Borya.

Alesha had a fraction of unsuccessful shots of 2/5, while Borya had a fraction of unsuccessful shots of 1/3.

Since a smaller fraction represents a better result in this case, we can conclude that Borya had a better result as his fraction of unsuccessful shots is smaller than Alesha's.

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