the sum of two no. a and b is 15. and the sum of their reciprocal 1/a and 1/b is 3/10. find numbers a and b
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Answered by
4
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
=>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
rahul1202:
nice
Answered by
3
Hope it will be helpful....:-)
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