If a = b = ab = 111, find the ratio of 5a + 4b + 15 to 5a + 4b + 3

To solve the problem, we start by substituting the values of a and b into the expressions. Given that a = 111 and b = 111, let’s first calculate the two expressions separately.

Step 1: Calculate 5a + 4b + 15

  • 5a = 5 * 111 = 555
  • 4b = 4 * 111 = 444
  • Therefore, 5a + 4b + 15 = 555 + 444 + 15 = 1114

Step 2: Calculate 5a + 4b + 3

  • Using the values we calculated for 5a and 4b, we have 5a + 4b + 3 = 555 + 444 + 3 = 1002

Step 3: Calculate the ratio

The ratio of the two expressions is:

Ratio = (5a + 4b + 15) : (5a + 4b + 3) = 1114 : 1002

Step 4: Simplifying the ratio

To simplify the ratio, we can divide both numbers by their greatest common divisor. The GCD of 1114 and 1002 is 2. Therefore:

  • 1114 ÷ 2 = 557
  • 1002 ÷ 2 = 501

The simplified ratio is:

Ratio = 557 : 501

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