Three numbers that are co - prime to each other are such that the product of the first two is 551 and that of the last two is 1073. Find, the sum of all the three numbers.
85
Product of first two numbers = 551
Prime factor of 551 is 19 and 29.
Product of next two numbers = 1073
Prime factor of 1073 is 29 and 37.
So, sum of three numbers = (19 +29 +37) = 85.