Question

the sum of two numbers is 15 if sum of their reciprocal is 3/10 find the numbers

Answer 1

let the two numbers be A and B
=>A+B=15                      .............(1)
and 
1/A +1/B=3/10
⇒(A+B)/AB = 3/10
from (1)
(A+B)/AB = 15/AB
⇒15/AB = 3/10
⇒AB = 50        ............(2)
solving (1) and (2)
A = 10 and B = 5
or
A = 5 and B = 10

Answer 2

a + b =15
1/a + 1/b = 3/10 ( given)
Sathiama tharillla pa,eppdi tha equation varum anna annala etha solve panna mudialla