Math

Jun Wei has 12 more 10 cent coins than 20 cent coins. The total value of all his coins is $5.40. Find the total number of coins he has.

  1. 👍 5
  2. 👎 4
  3. 👁 2,926
  1. Let x = ten and y = 20 cent coins

    x = y+12

    .10x + .20y = 5.40

    Substitute y+12 for x in the second equation and solve for y. Insert that value into the first equation to solve for x. Check by putting both values into the second equation.

    1. 👍 10
    2. 👎 15
  2. 66

    1. 👍 0
    2. 👎 10
  3. 40

    1. 👍 9
    2. 👎 5
  4. More syllabus D questions

    1. 👍 0
    2. 👎 1
  5. Not good solUtion

    1. 👍 1
    2. 👎 4
  6. I don't know why you people supposed to give wrong answers to confuse students
    Don't do this
    And
    The answer is 40

    1. 👍 1
    2. 👎 0
  7. I AM VERY SEXY

    1. 👍 2
    2. 👎 0

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