The ratio of two number is 3:4 and their lcm is 120 what is the 1st number
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Let the two numbers be 6x and 11x as their ratio is 6:11
Given 2 is added to first and 7 is added to second
Hence the numbers become, (6x + 2) and (11x + 7)
Given (6x + 2) : (11x + 7) = 8:15
Hence 15(6x + 2) = 8(11x + 7)
90x + 30 = 88x + 56
2x = 26
Therefore, x = 13
Hence the numbers are 6x = 6(13) = 78
11x = 11(13) = 143
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