Question

Производительность труда мастера на 17 деталей в час больше, чем производительность труда ученика. Мастер работал 4 ч, а ученик 7 ч. Определи количество деталей в час изготавливаемых мастером, если он изготовил деталей в 3 раза больше, чем ученик.

Answer 1

A деталей в час - производительность мастера, b -ученика
a-b=17     a=17+b          a=17+b   a=17+4     a=21
4a=3*7b   68+4b=21b    17b=68   b=4           b=4

Answer 2

Calculation of Master's Productivity

To determine the number of parts produced by the master per hour, we can use the given information:

- The master works for 4 hours. - The master's productivity is 17 parts per hour.

To calculate the total number of parts produced by the master, we can multiply the master's productivity by the number of hours worked:

Total parts produced by the master = Master's productivity * Number of hours worked

Substituting the given values:

Total parts produced by the master = 17 parts/hour * 4 hours

Calculating the result:

Total parts produced by the master = 68 parts

Therefore, the master produced 68 parts in 4 hours.