Question

На изучение математики в 7 классе на весь год отводится 170 уроков. 3/5 всех уроков математики составляет алгебра,а остальные геометрия. Сколько в году уроков алгебры и сколько уроков геометрии?

Answer 1

170:5*3=102алгебра
170-102=68 геометрия

Answer 2

170*3/5=102 урока  алгебры, 170-102=68 уроков геометрии

Answer 3

Calculating the Number of Algebra and Geometry Lessons

To calculate the number of algebra and geometry lessons in a year, we can use the given information that 3/5 of all math lessons are algebra, and the rest are geometry.

Total number of math lessons in a year: 170

Proportion of algebra lessons: 3/5

Proportion of geometry lessons: 2/5

Calculating Algebra Lessons

To find the number of algebra lessons: \[ \text{Algebra lessons} = \frac{3}{5} \times 170 \]

Algebra lessons: \( \frac{3}{5} \times 170 = 102 \)

Calculating Geometry Lessons

To find the number of geometry lessons: \[ \text{Geometry lessons} = \frac{2}{5} \times 170 \]

Geometry lessons: \( \frac{2}{5} \times 170 = 68 \)

Therefore, in a year, there are 102 algebra lessons and 68 geometry lessons.