Experimental primary schools hold art works competitions, and the number of people who win the first and second prizes accounts for three-fifths of the total number of winners, and the number of peopl

Experimental primary schools hold art works competitions, and the number of people who win the first and second prizes accounts for three-fifths of the total number of winners, and the number of people who win the second and third prizes accounts for three-fifths of the total number of winners. Judging from the meaning of the question.

The number of people who won the second prize is:

3/5+7/ 10- 1

= 13/ 10- 10/ 10

=3/ 10

The number of people who won the second prize accounted for three-tenths of the total number of prizes.

Extended data

Problem-solving exercise is one of the most commonly used and basic forms in students' mathematics learning activities. Through problem-solving exercises, students can not only acquire knowledge, consolidate and deepen their understanding of what they have learned, but also receive a kind of "thinking gymnastics" training, so that students can be promoted and developed from knowledge and skills to thinking ability, from intellectual factors to non-intellectual factors. Mathematics exercises have many functions, which are reflected in different links of mathematics teaching.