54 + 67 = 121
54 x 67 = 3618
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54 x 67 = 3618
13, which is the difference between the highest and lowest numbers, 67 and 54.
The sum of 67 and 78 is 145.
The two numbers are 18 and 36. Let the two numbers be x and y, then: x ÷ y = 2 ⇒ x = 2y x + y = 54 ⇒ 2y + y = 54 ⇒ 3y = 54 ⇒ y = 18 ⇒ x = 2y = 2 x 18 = 36
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