a number multiplied by 3 more than another number is 65, but the second number multiplied by 3 more than the first number is 80. What is the difference in the numbers?
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a number multiplied by 3 more than another number is 65, but the second number multiplied by 3 more than the first number is 80. What is the difference in the numbers?
(x) • (y + 3) = 65 —> xy + 3x = 65 (eq 1)
(y) • (x + 3) = 80 —> xy + 3y = 80 (eq 2)
subtract (eq 1) from (eq 2) 3y – 3x = 15
y – x = 5
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