Question

Лена решила купить себе чупа-чупсы. На деньги, которые у нее были, она смогла купить или 6 больших чупа-чупсов, или 12 маленьких ( без сдачи ). Лена купила на все деньги одинаковое количество больших и маленьких. Сколько она купила больших чупа- чупсов?

Answer 1

Поулчаеться 4 больших чупа-чупсов она купила и 4 маленьких 

Answer 2

Solution:

Given: - Lena can buy either 6 large lollipops or 12 small lollipops with the money she has, without any change. - She bought an equal number of large and small lollipops.

Let's denote the number of large lollipops as L and the number of small lollipops as S.

Equations: 1. Cost Equation: The cost of 6 large lollipops is equal to the cost of 12 small lollipops. - 6L = 12S

2. Equal Purchase Equation: Lena bought an equal number of large and small lollipops. - L = S

Solution Steps:

1. Use the "Equal Purchase Equation" to express the number of small lollipops in terms of the number of large lollipops. 2. Substitute the expression for the number of small lollipops into the "Cost Equation" to solve for the number of large lollipops.

Calculation:

1. From the "Equal Purchase Equation": - S = L

2. Substitute S = L into the "Cost Equation": - 6L = 12(L) - 6L = 12L - 6L - 12L = 0 - -6L = 0 - L = 0

Conclusion:

Lena cannot buy any large lollipops with the given conditions.