A school library has 200 DVDs in its collection. Given that 40% of the DVDs are about science and 45% are about history, how many of the DVD

Question

A school library has 200 DVDs in its collection. Given that 40% of the DVDs are about science and 45% are about history, how many of the DVDs are about other subjects?

in progress 0
Tryphena 5 years 2021-07-24T11:59:49+00:00 2 Answers 17 views 0

Answers ( )

  1. linhdan
    0
    2021-07-24T12:01:07+00:00
    Reply

    Answer:

    The last 15 percent of that would be 39

    Step-by-step explanation:

  2. Gerda
    0
    2021-07-24T12:01:25+00:00
    Reply

    Answer:

    15% so 30 dvds

    Step-by-step explanation:

    200 * 45% = 90 dvds

    200 *40% = 80 dvds

    200 – (90 + 80) = 30

    now check

    200 * 15% = 30 dvds

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )