If H.C.F of two numbers is 32 and L.C.M. is 192 and one of the numbers is 64, then sum of the numbers is

L.C.M of two numbers is $192$

one of the numbers is 64

The product of two numbers $=$ product of their L.C.M and H.C.F

$32\times 192=64\times b$

$\frac{32\times 192}{64}=b$

$\therefore b=96$