Answer: if the mass on moon is 115kg, then his weight on earth is 1127N
But if your data is referring to his weight and not his mass as 115kg, then his weight on earth would be 704.375N
Step-by-step explanation:
Weight = mass * acceleration due to gravity
On moon, his weight is 115N,
W = m*g
115 = m * 1.6
M = 115 / 1.6
M = 71.875kg
Weight on earth = mass * acceleration due to gravity on earth
Weight = 71.875 * 9.8
W = 704.375N
NB: the question isn't correct because the mass of a body remains the same irrespective of where measured, but the weight differs because of acceleration due to gravity