Question

If the harmonic mean of two numbers a and b is 5if a= 5 then b is

Answer 1

Answer:

To find harmonic mean first you have to know the formula. 2ab/(a+b)

given,

harmoninc mean of a and b is 5.

a = 5.

so,. harmonic mean of a and b = 2ab/(a+b)

(put the values) 5 = 2*5*b/(5+b)

(cross multiplication) 5*(5+b) = 10b

25+5b = 10b

b = 5

Answer 2

Step-by-step explanation:

5=2×5×b/5+b

5(5+b)=10b

25+5b=10b

25=5b

b=25/5

b=5