Question

До дня відкриття нового магазину надули 580 кульок-зелених,жовтих і червоних. Зелених і жовтих було 500 кульок. Скільки було білих кульок, якщо відомо, що їх на 19 більше, ніж червоних?

Answer 1

1) 580-500=80 (красных шариков)
2) 80+19=99 (белых шариков).

Answer 2

Solution:

To solve this problem, we can use a system of equations to represent the given information and then solve for the number of white balls.

Let's denote: - the number of green balls as G - the number of yellow balls as Y - the number of red balls as R - the number of white balls as W

We are given the following information: 1. G + Y + R = 580 2. G + Y = 500 3. W = R + 19

We can use equations 1 and 2 to find the values of G and R, and then use equation 3 to find the value of W.

Using equation 2, we can express G in terms of Y: G = 500 - Y

Substitute this value of G into equation 1: (500 - Y) + Y + R = 580 500 + R = 580 R = 580 - 500 R = 80

Now we can find the value of G: G = 500 - Y G = 500 - 80 G = 420

So, we have: - G = 420 - Y = 500 - 420 = 80 - R = 80

Using equation 3, we can find the value of W: W = R + 19 W = 80 + 19 W = 99

Answer:

The number of white balls was 99.