Question

if p+2q=18 and pq=40. Find (2/p +1/q)

Answer 1

Answer:

ratio  9/20.  Easy solution.

Step-by-step explanation:

Given p + 2 q = 18

          p q = 40

To find  LHS = 2/p  + 1/q  = (2 q + p)/ pq

     LHS = 18/40 = 9/20    by substituting the given values for the expressions in the numerator and the denominator.

Hence the answer will be   9/20.

There is no need to solve for p and q first and then substitute those values.

Answer 2

Answer:

9/20

Step-by-step explanation:

p+2q=18

pq=40

To find LHS = 2/p+1/q

=(2q+p)/pq

LHS =18/40

9/20