Answer:
85 Kg
314.041 N
Step-by-step explanation:
We are given that
Mass of body on earth=85 kg
Acceleration due to gravity on earth=

Weight of body on earth=830 N
We have to find the mas of body and weight of body on Mars.
We know that mass of an object does not change with location .
It remain same everywhere.
Mass of body on Mars=85 kg
Gravitational acceleration on the surface of Mars=

We know that
Weight =

Using this formula
Weight of body=

Hence, the weight of body on Mars=314.041 N