Question

Продавец пересчитал привезённые булочки, и оказалось, что булочек с вишнёвой начинкой 20 штук, с малиновой начинкой — 24 штук, було­чек с изюмом — 15 штук, булочек с шоколадной начинкой — 16 штук, остальные 5 — с маком. Продавец наугад взял одну булочку и положил на витрину. Какова вероятность того, что булочка на витрине будет с мали­новой начинкой?

Answer 1

Всего привезено 20+24+15+16+5=80 булочек. 80-100 %, 24-х %. х=24×100÷80=30 % - того, что будет булочка с малиновой начинкой.

Answer 2

Problem Analysis

The problem states that a seller has counted the number of buns with different fillings. There are 20 buns with cherry filling, 24 buns with raspberry filling, 15 buns with raisin filling, 16 buns with chocolate filling, and the remaining 5 buns have poppy seed filling. The seller randomly takes one bun and puts it on display. We need to determine the probability that the bun on display has raspberry filling.

Solution

To find the probability, we need to calculate the ratio of the number of buns with raspberry filling to the total number of buns.

The total number of buns is the sum of the buns with different fillings: Total number of buns = 20 (cherry) + 24 (raspberry) + 15 (raisin) + 16 (chocolate) + 5 (poppy seed)

The number of buns with raspberry filling is given as 24.

To find the probability, we divide the number of buns with raspberry filling by the total number of buns: Probability = Number of buns with raspberry filling / Total number of buns

Let's calculate the probability:

Total number of buns = 20 + 24 + 15 + 16 + 5 = 80 Number of buns with raspberry filling = 24

Probability = 24 / 80 = 0.3

Therefore, the probability that the bun on display has raspberry filling is 0.3.