Teaching CG Vyapam Assistant Teacher 2024 Mock Test Quantitative Aptitude Number System LCM and HCF

The HCF and LCM of two numbers are 15 and 420 respectively. If the sum of the numbers is 165, what is the sum of their reciprocals?

1
\(\frac{2}{105}\)
2
\(\frac{5}{28}\)
3
\(\frac{11}{420}\)
4
\(\frac{3}{140}\)
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