The HCF and LCM of two numbers x and y is 6 and 210 respectively. If x + y = 72, which of the following relation is correct?
(a) 1/x+1/y=3/35
(b)1/x+1/y=2/35
(c)1/x+1/y=35/2
Please don't type answer. Write complete solution.
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Step-by-step explanation:
The correct option is (b).1/x+1/y=2/35
the explanation is..
x×y=6×210=1260
therefore,
1/x+1/y=y+x/x.y
=72/1260
=4/70
=2/35
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