Question

số học sinh lớp 5a được chọn vào đội tuyển học sinh giỏi của trường bằng 1/8 số học sinh cả lớp . nếu lớp chọn thêm 3 em nữa thì số học sinh được chọn bằng 20% số học sinh cả lớp . Tính số học sinh của lớp 5a 

Answer 1

20%=1/5

3 học sinh chiếm là:

   1/5-1/8=3/40(số học sinh cả lớp)

Số học sinh lớp 5a là:

    3:3/40=40(học sinh)

             Đáp số:40 học sinh

Chú ý:/ là dấu ngăn đôi của phân số

Answer 2

40 học sinh . Trong violympic 40 học sinh là đúng

Answer 3

40H/S mới Dúng tôi tính rồi

 

Answer 4

40 học sinh

Answer 5

40 hoc sinh

Answer 6

40.000000000000000

Answer 7

40 học sinh . tớ chắc chắn 100%

Answer 8

45 hs do

Answer 9

 nếu thêm 3 em nữa thì số em được chọn là 20% số học sinh của lớp có ngĩa là bằng 1/5 số học sinh cả lớp phân số chỉ 3 em so với học sinh cả lớp là                                                                                                                                                                                                    1/5-1/8=3/40 số hs cả lớp                                                                                                                                                                                  số học sinh của lớp la                                                                                                                                                                               3:3/40=40 hs                                                                                                                                                                                      d/s 40 hoc sinh

Answer 10

40 hoc sinh 100

Answer 11

20%=1/5

3 phần trăm ứng là

1/5 - 1/8 =3/40 (so hoc sinh ca lop )

lớp 5a có số học sinh là

3 / 3/40 = 40 (học sinh)

đ/s là 40 học sinh

Answer 12

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Answer 13

40 hs 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%

Answer 14

sai rồi là 48 chác chắn luôn

Answer 15

40 đúng 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%

Answer 16

40 học sinh

Answer 17

sai rồi 48

Answer 18

40 học sinh là đúng. Tớ vừa làm violympic rồi.

Answer 19

40 h/s hôm qua tui làm rùi

Answer 20

40 hs 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%

Answer 21

40 hs nhe