Second prize percentage: 10 divided by 00 of 200 = 65438+200 =100 = 5%.
Third prize percentage: 35 divided by 200 = 35 =100 =17.5 =17.5%.
A school held a calligraphy competition with 200 entries. The first prize accounts for 1%, the second prize accounts for 6%, and the third prize is 75% more than the second prize. The third prize includes 200×6% = 12 people, and the third prize is 12×( 1+).
40 people won the first prize. Eight more people won the second prize than the first prize. Those who won the first prize were 2/7 less than those who won the third prize. The number of people who won the second prize is 40*( 1+5/8)=65.
The number of people who won the third prize is: 40*( 1-2/7)= (the answer is not an integer, but the calculation method is correct)
There are 50 people in a competition, 26 of whom won prizes. The ratio of the number of people who won the second prize to the number of people who won the first prize is 4: 1. The first prize is 0/8 of the 65438+ third prize.
X + 4X + X ÷ 1/8 = 26
13X = 26
X = 2
There are 20 boys in Class 5, 18 girls, 1. Among them, 2 boys won the first prize, 8 girls won the second prize, 3 girls won the first prize and 6 girls won the second prize. up to
Boys get 10 bonus, 10/20=50%.
Nine girls won the prize, 9/ 18=50%.
So it's the same height.
The number of participants who won the third prize is three times that of the first prize, and the number of people who know the first prize is less than that of the third prize 18. The number of people who won the first prize and the third prize is 18÷(3- 1)= 9 (people).
Third prize: 9x3=27 (person)
A: There are 9 first prizes and 27 third prizes.
Solution: The number of people who won the third prize is three times that of the first prize, that is to say, 1 time is the first prize, the number of people who won the third prize is twice that of the first prize (3- 1)=2 times, and the number of people who won the first prize is less than that of the third prize 18 times and more than 18 times.
I hope I can help you!
Five people take part in the competition, and the prize money is 10 thousand yuan. The first prize is the sum of the second prize and the third prize, and the second prize is the sum of the fourth prize and the fifth prize. How much is the third prize? X 1 = X2 + X3...........( 1)
X2 = X4 + X5...........(2)
X 1 = X4 + X5 + X3...(3)
2X 1 + X2 = 10000...(4)
Because x1>; X2·X2 & gt； X3 is given by (1) x 1-x2 = x3- >; x 1-X2 & lt； X2->； x 1 & lt； 2X2
So x2
Starting from 43333
X4 & gtX5->； x4+X5 & lt； 2X4 1000 & lt； X4 & lt 1666 1000 & lt； X5 & lt 1666
So 1666
This is the only way to forget it! I'll leave it to you.
A total of 195 students participated in the recitation contest, and 2/5 of them won the first prize. Seven of the 13 people who won the first prize were girls. Multiply 195 women who won the first prize by 2/5, and then multiply 78 by 7/ 13, and the number of women who won the first prize is 42. I hope it helps you.
The composition contest is1.2,3. The first prize is 2.3. The first prize accounts for 2/3 of the total number. Hello ~ ~ Glad to answer your question ~ ~
2/3÷( 1+2/3) ................................... regards the number of people who won the second and third prizes as 1.
=2/3÷5/3
=2/5
Or:
1 ÷ (1+1÷ 2/3) .................................. regards1the number of people who won the first prize as1.
= 1÷5/2
=2/5
The first prize accounts for 2/5 of the total number.
If my answer can help you, please click "Accept as Satisfied" to reply.
Or click satisfied in the upper right corner of the mobile phone client.
~ ~ Give someone a rose? Leave a lingering fragrance on your hands ~ ~
~ ~ Help each other? * * * has made progress ~ ~
Composition contest, 125 people participated, 6 people won the first prize, 16% won the second prize, and the third prize was 40% more than the second prize. What percentage of the total won the first prize? 6/ 125=0.048