Question

Маша и Даша купиль несколько воздушных шариков, причем одна из них купила на 12 воздушных шариков больше другой. Сколько воздушных шариков купила Даша, если Маша купила 18 воздушных шариков? Решить двумя способами.

Answer 1

1)18+12=30(ш.)
2)18-12=6(ш.)

Answer 2

1) 18+12=30 шариков у даши

Answer 3

Solution 1: Using Algebra

Let's denote the number of balloons Dasha bought as D. We know that Masha bought 18 balloons, and Dasha bought 12 more than Masha. Therefore, we can express Dasha's purchase in terms of Masha's purchase as:

D = M + 12

Substitute the value of Masha's purchase (18) into the equation:

D = 18 + 12

D = 30

So, Dasha bought 30 balloons.

Solution 2: Using Subtraction

Another way to solve this problem is by directly subtracting the difference in the number of balloons bought by Masha and Dasha from Masha's total purchase.

Masha bought 18 balloons, and Dasha bought 12 more than Masha, so:

Dasha's balloons = Masha's balloons + 12

Dasha's balloons = 18 + 12

Dasha's balloons = 30

So, Dasha bought 30 balloons.

Both methods yield the same result: Dasha bought 30 balloons.