The weight of a body on the earth’s surface;
W = mg (where m = mass of the body and g = acceleration due to gravity)
The value of g is larger at poles when compared to the equator. So gold can weigh less at the equator as compared to the poles.
We know that The value of g is greater at the poles than at the equator
gold weight at poles is Wp = m X gp
gold weight at the equator is We = m X ge
Hence, we can say gold weight at poles is more than gold weight at the equator, Hence, a friend at the equator will not match with the weight of gold bought from a place situated on poles.