10 times the first of 2 consecutive even integers is 8 times the second. Find the integers

Discussion in 'Calculator Requests' started by math_celebrity, Mar 3, 2020.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    10 times the first of 2 consecutive even integers is 8 times the second. Find the integers.

    Let the first integer be x. Let the second integer be y. We're given:
    1. 10x = 8y
    2. We also know a consecutive even integer means we add 2 to x to get y. y = x + 2
    Substitute (1) into (2):
    10x = 8(x + 2)

    Multiply through:
    10x = 8x + 16

    To solve for x, we type this equation into our search engine and we get:
    x = 8

    Since y = x + 2, we plug in x = 8 to get:
    y = 8 + 2
    y = 10

    Now, let's check our work. Does x = 8 and y = 10 make equation 1 hold?
    10(8) ? 8(10)
    80 = 80 <-- Yes!
     

Share This Page