how many are there in the competition

Ratio of Boys vĩ đại Girls who participate in SSC = 4 : 3

Ratio of Boys vĩ đại Girls who participate in PO = 8 : 13

Bạn đang xem: how many are there in the competition

Ratio of Boy vĩ đại Girl who participates in both the events of PO and SSC = 2 : 1

Ratio of Boys vĩ đại Girls who participate only in the PO sự kiện = 1 : 2

participation of boys in the SSC sự kiện alone is 10 more than vãn the Girls participation in PO alone

Boys who participate in both SSC and PO is 20% of the Boys who participate in Dancing events alone

Concept:

Total participant in SSC = participate only in SSC + participate in both SSC and PO

Total participant in PO = participate only in PO + participate in both SSC and PO

Total participant in competition = participate only in SSC + participate in both SSC and PO + participate only in PO

Calculation:

Let number of Girl participate only in SSC = x

So, Number of Boys participate only in SSC = x + 10

Number of Boys participate in both SSC and PO = (20/100) × (x + 10)

⇒ (x + 10)/5

Number of Girls participate in both SSC and PO = (1/2) × {(x + 10)/5}

⇒ (x + 10)/10

Number of Boys participate in SSC/Number of girls participate in SSC = 4/3

4/3 = {(x + 10) + (x + 10)/5}/{x + (x + 10)/10}

⇒ 2/3 = (6x + 60)/(11x + 10)

⇒ 18x + 180 = 22x + 20

⇒ 4x = 160

⇒ x = 40

Number of Girl participate only in SSC = 40

Number of Boys participate only in SSC = 40 + 10

⇒ 50

Xem thêm: bài 12 trang 74 sgk toán 8 tập 1

Number of Boys participate in both SSC and PO = (40 + 10)/5

⇒ 10

Number of Girls participate in both SSC PO= (40 + 10)/10

⇒ 5

Number of Boys participate in SSC = 50 + 10

⇒ 60

Number of girls participate in SSC = 40 + 5

⇒ 45

Number of Boys in PO/Number of Girls in PO = 8/13

8/13 = (10 + y)/(5 + 2y)

⇒ 40 + 16y = 130 + 13y

⇒ 3y = 90

⇒ hắn = 30

Number of Boys in PO only = 30

Number of Girls in PO only = 2 × 30

⇒ 60

Number of Boys in PO = 30 + 10

⇒ 40

Number of Girls in PO = 60 + 5

⇒ 65

Total participant in competition = (50 + 40) +(10 + 5) + (30 + 60)

⇒ 90 + 15 + 90

⇒ 195

Xem thêm: ý nghĩa của quá trình nguyên phân

∴ Total 195 participants were there in the competition.

SBI PO Final Result Out ((Advertisement No. CRPD/PO/2022-23/18)! Candidates who are qualified in the mains exam are eligible vĩ đại attend the Interview, Group Exercise and Psychometric Test. The Group Exercise and Interview will be held in April 2023. The State Bank of India (SBI) released the official notification of the SBI PO 2022 Recruitment. A total of 1673 vacancies have been released under SBI PO 2022-23 Recruitment. Candidates who will qualify in the prelims are eligible vĩ đại attend the mains. The candidates can kiểm tra the SBI PO Previous Year Papers which helps vĩ đại get the difficulty level of the exam and candidates are also advised vĩ đại attempt the SBI PO Test Series which helps vĩ đại get an experience of actual examination.