Question
The sum of two numbers is 143, and their difference is
13. What is the L.C.M of these two numbers?Solution
Let the two numbers be ‘a’ and ‘b’ where a > b.
So, a = b + 13
We have a + b = b + 13 + b = 143
So, b = (143 – 13) ÷ 2 = 65
L.C.M of 65 and 78 = 390
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